Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather USPetaluma

Petaluma weather

Loading live data…

NWSNational Blend (NBM)
69°
Clear
Feels 67° · Wind 9 mph · Humidity 60%
AmericanNOAA GFS
69°
Clear
Feels 65° · Wind 11 mph · Humidity 54%
EuropeanECMWF
69°
Clear
Feels 66° · Wind 11 mph · Humidity 60%

Latest for Petaluma: NWS (National Blend (NBM)): 69° Clear · American (NOAA GFS): 69° Clear · European (ECMWF): 69° Clear.

The weather map: all three models at once

NWS, American, European side by side around Petaluma 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

Petaluma, CA is at its warmest in Jul (average highs near 83°F) and coldest in Feb (lows around 41°F), with roughly 37 in of precipitation across the year. Below, compare what NWS, American, European forecast for Petaluma 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.

Petaluma climate by month

average daytime high and overnight low across a typical year
Jan
58°
44°
Feb
57°
41°
Mar
58°
43°
Apr
65°
45°
May
69°
49°
Jun
76°
52°
Jul
83°
55°
Aug
81°
55°
Sep
79°
54°
Oct
78°
53°
Nov
64°
46°
Dec
59°
46°

Which forecast is most accurate in Petaluma?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
American logo
American ★ Best
89
/100rank #1
76±2.4°F96±1.3 mph100100% hitNOAA / NCEP (United States)College Park, Maryland, USA
European logo
European
80
/100rank #2
51±4.9°F98±0.6 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom

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 Petaluma today?
On this page we show what NWS, American, European each forecast for Petaluma 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 Petaluma today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Petaluma 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 Petaluma?
Over the last 30 days, the American model has been the most accurate for Petaluma (CheckWeather Score 89/100), ahead of the European at 80. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Petaluma?
July is typically the warmest month in Petaluma, with average highs around 83°F.
How cold does Petaluma get?
The coldest month in Petaluma is February, when overnight lows average about 41°F.
How much rain does Petaluma get?
Petaluma sees roughly 37 in of precipitation a year, with January usually the wettest month.

Nearby

More US weather