Skip to main content
CheckWeather USSeattle

Seattle weather

Loading live data…
NWSNational Blend (NBM)
64°
Partly cloudy
Feels 63° · Wind 7 mph · Humidity 79%
AmericanNOAA GFS
59°
Clear
Feels 59° · Wind 4 mph · Humidity 85%
EuropeanECMWF
62°
Light drizzle
Feels 63° · Wind 3 mph · Humidity 88%

Latest for Seattle: NWS (National Blend (NBM)): 64° Partly cloudy · American (NOAA GFS): 59° Clear · European (ECMWF): 62° Light drizzle.

The weather map: all three models at once

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

Next 14 hours

consensus of the three models

7-day forecast

where the models agree, and where they split

Seattle, WA. Below we compare what NWS, American, European forecast for Seattle right now and flag exactly where they disagree, then break down Seattle's weather month by month and which forecast model has been most accurate here.

Seattle weather by month

what to expect in Seattle through the year

Here is Seattle's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Seattle by season.

Jan
46°
37°
Cool
Feb
47°
36°
Cool
Mar
51°
38°
Cool
Apr
55°
42°
Cool
May
65°
49°
Mild
Jun
69°
53°
Mild
Jul
78°
58°
Warm
Aug
77°
59°
Warm
Sep
69°
55°
Mild
Oct
60°
48°
Mild
Nov
50°
42°
Cool
Dec
49°
40°
Cool
Wettest

What Seattle's weather is like through the year

Seattle runs from warm summers, with July highs near 78°F, to cold winters, when February lows sit around 36°F (a swing of about 42°F across the year). December is usually the wettest month, and Seattle sees roughly 43 inches of precipitation annually.

Best time to visit Seattle

The most comfortable time to visit Seattle is usually May, June, July and August, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.

Which forecast is most accurate in Seattle?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
Behind Apple Weather, Windy
89
/100rank #1
87±1.3°F93±2.2 mph8994% hitECMWF — European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
Behind Windy & many free apps
83
/100rank #2
83±1.7°F94±1.8 mph7687% 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 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.

Bottom line: over the last 30 days the European model has been the most accurate forecast for Seattle, scoring 89/100 on our CheckWeather Score, ahead of the American at 83. See the full US accuracy scoreboard for exactly how every model is tested.

Common questions

What's the weather in Seattle today?
On this page we show what NWS, American, European each forecast for Seattle 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 Seattle today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Seattle 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 Seattle?
Over the last 30 days, the European model has been the most accurate for Seattle (CheckWeather Score 89/100), ahead of the American at 83. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Seattle?
July is typically the warmest month in Seattle, with average highs around 78°F.
How cold does Seattle get?
The coldest month in Seattle is February, when overnight lows average about 36°F.
How much rain does Seattle get?
Seattle sees roughly 43 in of precipitation a year, with December usually the wettest month.
When is the best time to visit Seattle?
The most comfortable time to visit Seattle is usually May, June, July and August, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.
Does it snow in Seattle?
Rarely — Seattle very seldom sees overnight lows drop below freezing, so lasting snow is unusual.

The forecasts Americans check

The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.

Nearby

More US weather