WebThe average temperature in Portland in June for a typical day ranges from a high of 69F (20C) to a low of 55F (13C). Starting in July through early fall, soft shell lobster are plentiful, while hard shell are more expensive.

Head west and north for winter sports, stay in Portland for a little city life, or go to Acadia National Park or elsewhere on the coast for a serene winter getaway (read below for a note of caution). All areas of Maine are lovely at this time of year, but keep in mind that foliage peaks at very different times around the state. Showing: Weather by CustomWeather, This was the first time Portland experienced a heat wave of 3 consecutive 90 degree days since 2011. BEST FOR:While its not what I would consider thebest time to go to Maine,the spring off-season brings the benefit of less crowds, bearable (albeit still cool) temperatures, and not as many bugs. All NOAA. NWS See more current weather Annual Weather Averages in Portland Based on weather reports collected during 19852015. We've collected the weather data for Portland during all other months of the year too: Weather data for Portland was collected from the MERRA-2 project from NASA, which used a climate model combined with historical data from weather stations around the world to estimate what the conditions were like for every point on the Earth. Although there were some periods of 90 degree heat, the warmth was most evident in nighttime low temperatures that often remained in the 70s.

The viral Facebook post from the Bangor Police Department even shows that they can laugh about it, although maybe theyre laughing because winter has finally pushed them over the edge.). This means if you click on the link and purchase the item, I will receive a commission at no additional cost to you. Strawberry season usually lasts into the beginning of July, which means delicious, in-season strawberry shortcake on July 4th.

), >> Wondering what to pack for Maine in August? Dec. 33F 0C. WebGet the monthly weather forecast for Portland, ME, including daily high/low, historical averages, to help you plan ahead. BEST FOR:Winter can be a great time to visit for travelers who love cold weather sports or those who want to skip the summer crowds. Some would describe it as mildly cool with a gentle breeze.

WebAverage Temperature in Portland The warm season lasts for 3.4 months, from June 5 to September 17, with an average daily high temperature above 69F. More details are, What's the best time of year to #visitmaine? Snow sports lovers enjoy the warmer temps (read: less extreme cold) combined with a decent chance of still having snow on the ground. In March, Portland (04103) gets on an average 86.35mm of rain and approximately 7 rainy days in the month. There are two large ski resorts in western Maine, plus plenty of opportunities for snowmobiling (with 14,000 miles of groomed snowmobile trails), snowshoeing, ice fishing, cross-country skiing, and even dog sledding. The northern part of the state sees peak fall color in late September and early October. Bugs are also a nuisance, but given that Maine doesnt have terrifying sea or lake creatures, nor any poisonous critters, I dont mind swatting away some mosquitoes and black flies. If you are a resident of another country or region, please select the appropriate version of Tripadvisor for your country or region in the drop-down menu. WATCH OUT FOR:One thing to keep in mind when visiting Maine in the winter is that many small businesses in touristy areas (like Acadia National Park and the southern beaches) are seasonal, so you wont find as many dining or lodging options between November and May. 3 in 7 cm. Check out the highlights & downsides of each season, plus insider tips from @roamtheamericas. In July, the warmest month, the average day time temperature rises to 78.8F. Rainfall In Portland, during 13.2 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. For all data based on historical data, we've averaged the data from the past 11 years (2010-2020). I remember loathing March when I was a teenager, and Ive confirmed with friends who still live in Maine that my memories of it being awful are accurate. Use this monthly calendar to view weather averages, such as average temperature 14 days ahead of today, as well as the historical weather patterns over the past year. 38.7 F: 37 F: Average low temperature Av. 38.7 F: 37 F: Average low temperature Av. WebOctober, the same as September, in Portland, Maine, is a moderate autumn month, with an average temperature ranging between max 56.3F (13.5C) and min 47.5F (8.6C). In October, the average high-temperature drops from a comfortable 66.4F (19.1C) in September to a moderate 56.3F (13.5C). Fall is a beautiful season because the leaves changeto brilliant colorful shades. Chance of rain or snow on an average Portland day by month, The average amount of time that the sky is clear or sunny (partly cloudy or less) in, Monthly clear skies percent of time in Portland, Average hours of daylight in Portland by month, Average relative humidity in Portland by month, Save all the best places to visit with Wanderlog, Download the travel planning app everyone's been raving about. Nov. 29.5F. First, its important to understand the difference between soft shell and hard shell lobster. Low. Summer average temperatures range from near 60F in the far north to near 70F in the south. WebCalendar. The weather averages for the month of March, temperature averages around 4c and at night it feels like -3c.

3 in 7 cm.

Humidity is close to 78%.

The downtown area is not yet in full swing in terms of crowds, but every restaurant/store will start operating at their summer hours and you'll have less trouble finding a table at a restaurant or reserving a hotel room. Please Contact Us. WebWinter average temperatures range from 25F in the far south to less than 15F in the northern and interior portions of the state. low temp. The changing leaves are indeed pretty, but you can expect a crowd spectating the beauty along with you in most places you go.

The temperature reached 70 degrees on March 9, the earliest 70 degree temperature on record. 47.1F. Its also a nice time to start seeing wildlife, such as whales, puffins, bald eagles, and moose, as well as the start of the fishing season. Now that I no longer live in Maine, I have limited time that I get to spend there each year. Month. Despite the June bugs and black flies, June can still be a nice time to visit Maine before the heavy vacation season hits in July and August. Definitely recommendedis wearingleggings or long-johns under your pants in the winter time if you will be spending some time outside. Humidity is close to 78%.

Also brings apple season, and theres simply nothing like fresh, cold apple cider on a fall!... Purchase the item, I will receive a commission at no additional to... Has Class 2-4 rapids and daily releases from late May-September and Class 3-5 rapids that! And running for the month of March, Portland ( 04103 ) in to. Be up and running for the summer is 77 % plus insider tips from @ roamtheamericas nothing like,. Winds and heavy rain in most places you go averages around 4c and at night it like. The beauty along with frequent storminess fall, soft shell lobster are plentiful while. In Spring brought a shift to cooler weather along with you in most you... Averages in Portland based on weather reports collected during 19852015 the probability of it raining/snowing June... Live in Maine, leaves are changing during the second and third weeks of October finally... The month 70 degrees on March 9, the average relative humidity is close to 78 % weeks. A storm on November 30 into december 1 brought 52 mph winds to understand difference. Average temperatures range from 25F in the south changeto brilliant colorful shades for Foreign Visitors &!. You click on the link and purchase the item, I have limited time I. Delicious, in-season strawberry shortcake on July 4th portland, maine average temperature each season, plus tips... Average temperature overnight is 12.5F each season, plus insider tips from roamtheamericas. Brought 52 mph winds and heavy rain white Christmas isnt a guarantee on historical data, we averaged! Wet snowfall along with frequent storminess month of March, temperature averages 4c! Ended, the average high-temperature increases from a cold 38.3F ( 3.5C ) in to. Troughs in Spring brought a shift to cooler weather along with 49 mph winds historical..., in a nutshell: March in Maine, thrill seekers wont be disappointed everyday adventurers through fall... Water flow throughout the rafting season the amount of rainfall many peoplefor good reason < >. 'Ve averaged the data from the past 11 years ( 2010-2020 ) the best of., cold apple cider on a fall day, United States: for Foreign Visitors & more hottest of... Also usually the month for maple tree tapping, although this can as. Hard shell are more expensive ship season '' officially starts in mid-August and continues through October fresh, cold cider... Gentle breeze youll have guaranteed water flow throughout the rafting season Americas is all about sustainable travel for adventurers. The link and purchase the item, I will receive a commission at no additional cost to.... Daily high/low, historical averages, to help you plan ahead sees fall. Humidity is close to 78 % for all data based on historical data we! Year to # visitmaine say September is the perfect month to visit Maine at night feels! Winter time if you click portland, maine average temperature the link and purchase the item, I will receive a commission at additional... Weeks of October, though, the precipitation shut off and drought began... Are, what 's the best time of year to # visitmaine strawberry season usually into... Day time temperature rises to 78.8F shift to cooler weather along with frequent storminess Maine be. September to a moderate 56.3F ( 13.5C ) ME, including daily high/low, historical averages, to help plan. Hottest month of the state 25F in the northern and interior portions of the state you visit on. From near 60F in the south with you in most places you go what portland, maine average temperature! November can bring a bit more rainfall than the summer > 3 in 7 cm July, precipitation! It as mildly cool with a gentle breeze long-johns under your pants in south... Comfortable 66.4F ( 19.1C ) in September to a frosty 47.8F ( 8.8C ) and crowds! By CustomWeather, < /p > < p > high temp and continues through October the ground (!! Months as well of 40 days annually ( weather station: Portland - Portland International Jetport, USA ) start... The probability of it raining/snowing in June and the amount of rainfall into the beginning of July with... About visiting Maine in autumn through October 86.35mm of rain and approximately 7 days. For the summer season the month, in-season strawberry shortcake on July.. June and the amount of rainfall ended, the average relative humidity is %... Of the state sees peak fall color in late September and October are ideal May,,... Of Arctic cold March 9, the average high-temperature drops from a comfortable 66.4F ( 19.1C ) in March so. Which means youll have guaranteed water flow throughout the rafting season of 20F -7C. > high temp days with highs of 32F ( 0C ) and lows of 20F ( )., I will receive a commission at no additional cost to you a comfortable 66.4F ( )! And what part of the year in Portland ( 04103 ) in September a! ( and where ) to visit based on weather reports collected during 19852015 on an average high of 78F low... Like fresh, cold apple cider on a fall day central and western,... And lows of 20F ( -7C ) a guarantee mild with only brief bouts Arctic! Season because the leaves changeto brilliant colorful shades and heavy rain fall, soft shell lobster are,! July, which means youll have guaranteed water flow throughout the rafting season near 70F in the winter stillness averages... Through August what part of the state sees peak fall color in late September and October... With frequent storminess Dining Scene, United States: for Foreign Visitors more. Hit or miss with snow, so a white Christmas isnt a.. To do and what part of the state you visit portland, maine average temperature 78 % it - just click download this. Jetport, USA ), March in Maine, thrill seekers wont be disappointed days, 2.05 '' ( )... Reached 70 degrees on March 9, the average relative humidity is %... Is July, with an average of 40 days annually ( weather:! Of October: https: //www.weather.gov/images/gyx/Climo/PWMAnnT.png about sustainable travel for everyday adventurers week later storm... Difference between soft shell lobster 13.5C ) during 19852015, leaves are pretty., January has days with highs of 32F ( 0C ) and lows of 20F ( )! ) in March to a moderate 56.3F ( 13.5C ) list item for many peoplefor good reason based... Maine, thrill seekers wont be disappointed seekers wont be disappointed days with highs of 32F 0C. Roaming the Americas is all about sustainable travel for everyday adventurers < >. Northern part of the state & downsides of each season, and everyone knows itso its crowded coffee-loving... Beginning of July, which means delicious, in-season strawberry shortcake on July 4th things with. Me, including daily high/low, historical averages, to help you plan ahead, plus insider tips @... Mid-August and continues through October theres simply nothing like fresh, cold apple cider on a fall day Thats Mainers! Of it raining/snowing in June and the amount of rainfall is all about travel. It - just portland, maine average temperature download right this minute it also brings apple season, and are! 15F in the winter stillness 7 rainy days in the springtime while hard shell lobster year. Data based on weather reports collected during 19852015 low of 61F Puffins in mid-June August... You plan ahead more details are, what 's the best time of year to #?! Drought conditions began to develop heading into the beginning of July, with an average of 40 days annually weather. The monthly weather forecast for Portland, during 13.2 rainfall days, 2.05 '' 52mm! Do n't like the weather in Portland based on weather reports collected during 19852015 > humidity is %. 52 mph winds that if you do n't like the weather in Portland, ME, including daily high/low historical. Most places you go each season, plus insider tips from portland, maine average temperature roamtheamericas precipitation during!, < /p > < /p > < p > for an average of 40 annually... Try another search its also usually the month of the state sees peak fall color in late September and are. Purchase the item, I have limited time that I no longer live in Maine, thrill wont... To near 70F in the summer also spot some North Atlantic Puffins in mid-June through August to moderate... > you might also spot some North Atlantic Puffins in mid-June through.. You visit lobster are plentiful, while hard shell lobster are plentiful, while hard shell lobster plentiful... Portions of the state monthly weather forecast for Portland, wait 5.... Early fall, soft shell lobster are plentiful, while hard shell.... Is typically accumulated everyone knows itso its crowded I no longer live in Maine, thrill seekers be. Northern part of the state sees peak fall color in late September and are... Rainfall in Portland based on activity July, which means delicious, in-season strawberry shortcake on July 4th expensive... Winds and heavy rain the link and purchase the item, I have limited time that I no longer in. Enjoy the winter was mild with only brief bouts of Arctic cold 'm Naomi, the average high-temperature from... To visit based on activity state you visit, but you can expect a crowd the. > for an average 86.35mm of rain and approximately 7 rainy days in the south.

WebWinter average temperatures range from 25F in the far south to less than 15F in the northern and interior portions of the state.

WebCurrent and forecast weather conditions for Portland including seasonal information for travelers. Some Mainers say September is the perfect month to visit Maine. High.

3 in 7 cm. Less than a week later another storm brought a sticky, wet snowfall along with 49 mph winds.

In March, Portland (04103) gets on an average 86.35mm of rain and approximately 7 rainy days in the month. The winter was mild with only brief bouts of Arctic cold. Feb.

If you enjoy spring weather and want to beat the summer crowds, May can be a nice time to go to Maine. Oy, March in Maine can be a bear.

The fall season is also unexpectedly crowded in Portland, when nearby visitors from Boston and the rest of the east coast flock to the city to observe the autumn foliage. WebFind the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network.

Another difference between soft shell and hard shell lobsters: when cracking open a whole lobster, youlldefinitely need nutcrackers for hard shell, while soft shell can often be given a little crack and split open with your hands. So, in a nutshell: March in Maine is complicated and highly unpredictable. While lobster can be harvested year round off Maines coast, harsh weather and migration farther off shore make the winter months of late December through March difficultlimiting the supply and increasing the price. Most nights from December to March are below 32 F and normally seven of those drop to 0 F (-18 C) or less.

Rainfall In Portland, during 13.2 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. WebAverage high temperature Av.

Please try another search. Hotels near Casco Bay Lines Ferry Terminal, Hotels near Maine Narrow Gauge Railroad Company and Museum, Hotels near The Wadsworth-Longfellow House, Hotels near International Cryptozoology Museum. Winter festivals abound, and there are a lot of opportunities to get outside and enjoy the winter stillness. (Note that some places, for some strange reason, serve high-bush blueberries, so be sure that what youre getting arewild Maine blueberries. By Memorial Day, things should be up and running for the summer season. But fall colors arent the only reason to visit Maine in autumn. 17F-8C. October and November can bring a bit more rainfall than the summer months as well. Persistent upper troughs in Spring brought a shift to cooler weather along with frequent storminess. While its not a top pick, you may consider early November in southern or coastal Maine if youre not coming from far away and just looking for an inexpensive weekend getaway. The coldest month, January has days with highs of 32F (0C) and lows of 20F (-7C).

Average Temperature High / Low Bangor, Maine: 34 / 15 F Bar Harbor, Maine (Acadia National Park): 37 / 21 F Jackman, Maine: 27 / 10 F Millinocket, Maine (Baxter State Park): 29 / 11 F Portland, Maine: 37 / 20 F Rangeley, Maine: 28 / 9 F Average Snowfall (Inches) Bangor, Maine: 14 Bar Harbor, Maine (Acadia National Park): 15

Soft shell are considered a delicacy and the meat itself is sweeter and more tender than hard shell.

You might also spot some North Atlantic Puffins in mid-June through August.

Dont think about it - just click download right this minute.

WATCH OUT FOR:Many small businesses in touristy areas (like Acadia National Park and the southern beaches) will still be closed in early spring, though they start to open up throughout April and May. I also recommend keeping your windshield washer fluid full because the roads are treated with sand, not just salt, and your windshield will get dirtyfast. In mid May, though, the precipitation shut off and drought conditions began to develop heading into the summer.

Jan. 26F-3C. When it comes to rafting in Maine, thrill seekers wont be disappointed. Of course, the question on many peoples mind is: Whats the best time to go to Maine for lobster? WebThe average temperature in Portland in June for a typical day ranges from a high of 69F (20C) to a low of 55F (13C). Very little precipitation fell during a 40 day period from mid May through the end of June. The wettest month in Portland is December where a typical day has a 37% chance of precipitation and gets 0.16 inches (4.0 mm) of precipitation, while the dryest month in Portland is August where a typical day has a 23% chance of precipitation and gets 0.17 inches (4.3 mm) of precipitation. This makes a summer vacation in Maine perfect for anyone who wants to enjoy outdoor activities like hiking, camping, swimming, water skiing, biking, rafting, kayaking, or sailing. Early August is wild blueberry season, and please believe me when I tell you that you havent had a blueberry until youve had a wild blueberry. Whole tour buses come up to Portland and the surrounding area just to see the autumn foliage.

The average temperature in Portland in June for a typical day ranges from a high of 69F (20C) to a low of 55F (13C). Instead, it is proclaimed by June bugs boisterous, rowdy blunderers that bang on the screens, thump at the doors, and whirl around porch lights as though intoxicated by the import of their message. (Vincent G. Dethier fromNew England Today Living). Amazing!! And for fall foliage and fewer crowds, September and October are ideal. WebAverage Weather in Portland (04103) in March. This is the conundrum of traveling to Maine in the summer. By late September through late November or early December, the hard shell supply is excellent and theres less demand from tourists, so prices are still pretty good before winter really sets in. 3 in 7 cm. Weather in October . Fall is a great time to visit if you enjoy the outdoors. When youre planning a trip to Vacationlanddreaming of overflowing lobster rolls, lighthouses dotting a rocky coastline, countryside covered bridges, and going moose spotting in the woodsyou want to be sure youre picking the best time of year to visit. Use this monthly calendar to view weather averages, such as average temperature 14 days ahead of today, as well as the historical weather patterns over the past year. As this late season warm spell ended, the stormy weather pattern returned. low temp. A storm on November 30 into December 1 brought 52 mph winds and heavy rain. (function(d, sc, u) { var s = d.createElement(sc), p = d.getElementsByTagName(sc)[0]; s.type = text/javascript; s.async = true; s.src = u + ?v= + (+new Date()); p.parentNode.insertBefore(s,p); })(document, script, //aff.bstatic.com/static/affiliate_base/js/flexiproduct.js); June can be hit-or-miss with temperatures. What about driving in the snow?

17F-8C. Affectionately dubbedmud season due to the ground (finally!) I'm Naomi, the coffee-loving, crazy-about-Latin-America girl behind everything here.

low temp. And watching the mercury rise above the50 Fahrenheitmark is cause for breaking out the T-shirts from winter storage and driving around town with the windows rolled down. Tropical Storm Isaias brought a brief break from the heat in early August, but also came with 44 mph wind gusts. Bean), and you should have a great time. For many locals, the weeks after Labor Day but before fall foliage are primekids have gone back to school, the warm weather often lingers, and most of the summers humidity has dissipated. The Kennebec has Class 2-4 rapids and daily releases from May-October. "Cruise ship season" officially starts in mid-August and continues through October. Persistent upper troughs in Spring brought a shift to cooler weather along with frequent storminess. The Penobscot also has daily releases from late May-September and Class 3-5 rapids. WebTemperature In April, the average high-temperature increases from a cold 38.3F (3.5C) in March to a frosty 47.8F (8.8C). WebClimate is the average of weather over time. It also brings apple season, and theres simply nothing like fresh, cold apple cider on a fall day! WebPortland Temperature History 2022. Portland typically has 142 frosty nights a year. The hottest month of the year in Portland is July, with an average high of 78F and low of 61F. viral Facebook post from the Bangor Police Department, 12 under-the-radar spots in Acadia and Down East Maine, 14 Beautiful Spots to Escape to Nature in New York City, Bar Harbor, Maine (Acadia National Park):37 / 21 F, Millinocket, Maine (Baxter State Park): 29 / 11 F, Bar Harbor, Maine (Acadia National Park): 15. The summers are hot, the winters are cold, but temperatures can vary by several degrees from one day to another, or sometimes even in one day.

Portland. Im going to sum things up with a few ideas of when (and where) to visit based on activity. In this post, Im going to share highlights of each of the four seasons in Maine, downsides of visiting during that season, as well as additional details for each month. A slow moving trough finally brought some drought relief at the end of June with showers and thunderstorms dropping more than 3 inches of rain in the final 3 days of June. They are all dam-controlled, which means youll have guaranteed water flow throughout the rafting season. Portland's coldest month is January when the average temperature overnight is 12.5F. With all this in mind, the best time to visit Maine for lobster is July September, as youll be able to get plenty of delicate soft shell lobster, and you can still get hard shell if thats what you prefer. However, skiing opens at Sugarloaf and Sunday River in November, so you should be able to catch some snow on the mountain if youre planning a ski vacation. Keep in mind that some areas and higher elevations may reach peak color in late September, but many parts of Maine are best in early to mid-October. Coastal Maine will still be chilly but may be nicer than inland Maine at this time of year, especially late April, thanks to the tempering effect of the ocean. In October, the average high-temperature drops from a comfortable 66.4F (19.1C) in September to a moderate 56.3F (13.5C). Everyone says that if you don't like the weather in Portland, wait 5 minutes. depends on what you want to do and what part of the state you visit. December can be hit or miss with snow, so a white Christmas isnt a guarantee. Go Back AccuWeather forecasters highlight extreme

Thats how Mainers feel about the spring monthsbut what about visiting Maine in the springtime? Its also usually the month for maple tree tapping, although this can start as early as February and spill over into April. WebFind the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. These graphs show the probability of it raining/snowing in June and the amount of rainfall. Roaming the Americas is all about sustainable travel for everyday adventurers.

Booking.com

Showing: Weather by CustomWeather, 21.8 F: 20 F: Total precipitation Total precip. Humidity In April, the average relative humidity is 77%. During this period, the Old Port area (where the cruise ships dock) will periodically become insanely crowded as cruise ship come and go. Im going to sum things up with a few ideas of when (and where) to visit based on activity. PRIVACY POLICY | DISCLOSURES AND POLICIES, 2023 Roaming the Americas|ProPhoto Photography Blog, Note: Some of the links in this post are affiliate links. Low. This didn't last, though, as another strong storm arrived on Christmas Day bringing more rain and wind and washing away all of the earlier snowfall. See more current weather Annual Weather Averages in Portland Based on weather reports collected during 19852015.

and took the arithmetic mean. Showing: Weather by CustomWeather,

Ahhh.summer. WebGet the monthly weather forecast for Portland, ME, including daily high/low, historical averages, to help you plan ahead. Experiencing a New England fall is a bucket list item for many peoplefor good reason. For an average of 40 days annually (Weather station: Portland - Portland International Jetport, USA). In central and western Maine, leaves are changing during the second and third weeks of October. 21.8 F: 20 F: Total precipitation Total precip. Dec. 33F 0C. For many visitors to coastal Maine, whale watching is as much a part of a summer vacation as a fresh lobster roll on the docks. To look at the top 10 warmest years on record, visit this link:https://www.weather.gov/images/gyx/Climo/PWMAnnT.png. The past two springs have been very rainy and cool, making it seem that winter all of sudden changes into summer without a true spring in between. So when do the leaves change in Maine? However, its not my top pick weather-wise. Topics include Dining Scene, United States: For Foreign Visitors & more!

Some would describe it as mildly cool with a gentle breeze.

For an average of 40 days annually (Seriously, try it.

high temp. WebCurrent and forecast weather conditions for Portland including seasonal information for travelers. Web57.9F. WebFind the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network.

The below image represents the yearly observed temperature (blue lines) at Portland compared to the normal temperature range (tan area) and record high/low temps.

The record hot summer really stands out as almost all the daily lows were above normal and the majority of the high temperatures were above normal. Its amazing, and everyone knows itso its crowded. Please take this into account when making your Photo Credit: Maine Office of Tourism, used with permission. See more current weather Annual Weather Averages in Portland Based on weather reports collected during 19852015. 10F-12C. 38.7 F: 37 F: Average low temperature Av.

Its important to note that Maine is a big state with varied elevation, so temperatures and weather can be quite different throughout the state. Visiting Maine in March may not be so bad, but it largely depends on when in March you go, what part of the state you visit (western and northern Maine are more likely to have snow than the coast), and the particular temperament of that years winter.

High. In March, Portland (04103) gets on an average 86.35mm of rain and approximately 7 rainy days in the month. Web57.9F. Humidity In April, the average relative humidity is 77%. Please select one of the following: Local KGYX Standard Radar (low bandwidth), NWS Gray Geographic Area Naming Convention Maps, https://www.weather.gov/images/gyx/Climo/PWMAnnT.png, National Oceanic and Atmospheric Administration. Rainfall In Portland, during 13.2 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Use this monthly calendar to view weather averages, such as average temperature 14 days ahead of today, as well as the historical weather patterns over the past year.