South San Francisco (CA) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in South San Francisco (California). The numbers are calculated over a 30-year period to provide a reliable average.
- Most rainfall (rainy season) is seen in December.
- South San Francisco has dry periods in May, June, July, August, September and October.
- On average, December is the wettest month with 114 mm of precipitation.
- On average, July is the driest month with 1 mm of precipitation.
- The average amount of annual precipitation is 488 mm.
Current rainfall in South San Francisco (CA)
partly cloudy and chance of rain
partly cloudy and chance of rain
overcast and heavy rain