Average monthly snow and rainfall in Foster City (CA)
The mean monthly precipitation over the year in Foster City (California), including rain, snow, hail.
- Foster City has dry periods in May, June, July, August, September and October.
- On average, December is the wettest month with 96 mm of precipitation.
- On average, July is the driest month with 0 mm of precipitation.
- The average amount of annual precipitation is 401 mm.
Weather Forecasts for Foster City (CA)
Fri May 03
22°C | 10°C
W 
40 km/h
40 km/h
clear and no rain
Sat May 04
16°C | 10°C
W 36 km/h
36 km/h20 mm
broken clouds and rain
Sun May 05
15°C | 9°C
W 40 km/h
40 km/h
almost clear and no rain
