Average monthly snow and rainfall in South San Francisco (CA)
The mean monthly precipitation over the year in South San Francisco (California), including rain, snow, hail.
- 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.
Forecast for South San Francisco (CA)
broken clouds and rain
clear and no rain
almost clear and no rain