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CheckWeather USFoster City

Foster City weather

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The weather map: all three models at once

NWS, American, European side by side around Foster City 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

Foster City, CA is at its warmest in Jul (average highs near 71°F) and coldest in Feb (lows around 45°F), with roughly 29 in of precipitation across the year. Below, compare what NWS, American, European forecast for Foster City 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.

Foster City climate by month

average daytime high and overnight low across a typical year
Jan
56°
47°
Feb
55°
45°
Mar
56°
47°
Apr
60°
49°
May
64°
52°
Jun
68°
54°
Jul
71°
58°
Aug
70°
59°
Sep
70°
59°
Oct
71°
59°
Nov
61°
53°
Dec
57°
50°

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 Foster City today?
On this page we show what NWS, American, European each forecast for Foster City 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 Foster City today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Foster City 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 Foster City?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Foster City 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 Foster City?
July is typically the warmest month in Foster City, with average highs around 71°F.
How cold does Foster City get?
The coldest month in Foster City is February, when overnight lows average about 45°F.
How much rain does Foster City get?
Foster City sees roughly 29 in of precipitation a year, with January usually the wettest month.

Nearby

More US weather