Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather USPortland
Forecast confidence: Medium · models disagree by 7°F

Portland weather

Loading live data…

Cloudy,much the same tomorrow

NWS, the American and the European model put Portland's high today between 65° and 72°, a 7° split. Tomorrow looks partly cloudy around 69°, with a 36% chance of rain.

69°61°
69°57°
75°56°
75°61°
68°57°
80°64°
Todaysplit ±7°Tomorrowsplit ±7°Mondaysplit ±5°Tuesdaysplit ±10°Wednesdaysplit ±4°Thursdaysplit ±11°
NWSNational Blend (NBM)
65°
Cloudy
Today 65°·Low 61°·Rain 7%
AmericanNOAA GFS
72°
Cloudy
Today 72°·Low 61°·Rain 7%
EuropeanECMWF
70°
Light drizzle
Today 70°·Low 61°·Rain 31%

The weather map: all three models at once

NWS, American, European side by side around Portland and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Cloudy
69° 61°
±7°
Tomorrow
Partly cloudy
69° 57°
±7°
Mon
Mostly clear
75° 56°
±5°
Tue
Cloudy
75° 61°
±10°
Wed
Light drizzle
68° 57°
±4°
Thu
Light drizzle
80° 64°
±11°
Fri
Cloudy
72° 61°
±20°
Sat
Clear
69° 57°
±13°
Sun
Cloudy
74° 60°
±22°
Mon
Light drizzle
73° 64°
±14°
Tue
Drizzle
68° 59°
±9°
Wed
Heavy drizzle
73° 59°
±5°
Thu
Cloudy
70° 57°
models agree
Fri
Cloudy
66° 57°
models agree

Portland, ME is at its warmest in Jul (average highs near 82°F) and coldest in Feb (lows around 21°F), with roughly 52 in of precipitation across the year. Below, compare what NWS, American, European forecast for Portland right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Portland climate by month

average daytime high and overnight low across a typical year
Jan
37°
24°
Feb
38°
21°
Mar
44°
29°
Apr
53°
37°
May
66°
47°
Jun
72°
57°
Jul
82°
65°
Aug
77°
61°
Sep
73°
56°
Oct
62°
46°
Nov
48°
35°
Dec
39°
27°

Which forecast is most accurate in Portland?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
79
/100rank #1
60±4.0°F97±0.9 mph8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
71
/100rank #2
87±1.3°F94±1.9 mph3665% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±7°65° to 72°±24%7% to 31% chance
Tomorrow±7°65° to 72°±29%7% to 36% chance
Mon±5°72° to 78°±1%1% to 2% chance
Tue±10°70° to 80°±19%1% to 20% chance
Wed±4°67° to 71°±7%53% to 60% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Portland

today, local time
Sunrise
06:09
Sunset
19:09
Daylight
13h 0m

Common questions

What's the weather in Portland today?
On this page we show what NWS, American, European each forecast for Portland today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Portland today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Portland and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Portland?
Over the last 30 days, the European model has been the most accurate for Portland (CheckWeather Score 79/100), ahead of the American at 71. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Portland?
July is typically the warmest month in Portland, with average highs around 82°F.
How cold does Portland get?
The coldest month in Portland is February, when overnight lows average about 21°F.
How much rain does Portland get?
Portland sees roughly 52 in of precipitation a year, with March usually the wettest month.

Nearby

More US weather