Foster City (CA) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in Foster City (California). The numbers are calculated over a 30-year period to provide a reliable average.
- 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.
Current rainfall in Foster City (CA)
partly cloudy and chance of rain
partly cloudy and chance of rain
overcast and heavy rain