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CheckWeather USSonoma

Sonoma weather

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The weather map: all three models at once

NWS, American, European side by side around Sonoma and nearby towns.Live rain radar →
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Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split

Sonoma, CA is at its warmest in Jul (average highs near 89°F) and coldest in Feb (lows around 39°F), with roughly 40 in of precipitation across the year. Below, compare what NWS, American, European forecast for Sonoma 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.

Sonoma climate by month

average daytime high and overnight low across a typical year
Jan
57°
42°
Feb
57°
39°
Mar
58°
41°
Apr
67°
44°
May
73°
49°
Jun
80°
53°
Jul
89°
56°
Aug
86°
56°
Sep
82°
54°
Oct
79°
52°
Nov
63°
43°
Dec
58°
42°

Which forecast is most accurate in the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
89
/100rank #1
87±1.3°F96±1.2 mph8592% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
81±1.9°F93±2.2 mph4972% 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.

Common questions

What's the weather in Sonoma today?
On this page we show what NWS, American, European each forecast for Sonoma 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 Sonoma today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Sonoma 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 Sonoma?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Sonoma forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Sonoma?
July is typically the warmest month in Sonoma, with average highs around 89°F.
How cold does Sonoma get?
The coldest month in Sonoma is February, when overnight lows average about 39°F.
How much rain does Sonoma get?
Sonoma sees roughly 40 in of precipitation a year, with January usually the wettest month.

Nearby

More US weather