Average monthly snow and rainfall in San Mateo (CA)
The mean monthly precipitation over the year in San Mateo (California), including rain, snow, hail.
- San Mateo has dry periods in May, June, July, August, September and October.
- On average, December is the wettest month with 99 mm of precipitation.
- On average, July is the driest month with 0 mm of precipitation.
- The average amount of annual precipitation is 415 mm.
Forecast for San Mateo (CA)
clear and no rain
partly cloudy and no rain
almost clear and no rain