San Ramon (CA) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in San Ramon (California). The numbers are calculated over a 30-year period to provide a reliable average.
- Most rainfall (rainy season) is seen in December.
- San Ramon has dry periods in May, June, July, August and September.
- On average, December is the wettest month with 111 mm of precipitation.
- On average, August is the driest month with 0 mm of precipitation.
- The average amount of annual precipitation is 517 mm.
Current rainfall in San Ramon (CA)
Sat Nov 23
15°C | 7°C
SW 
14 km/h
14 km/h2.3 mm
partly cloudy and chance of rain
Sun Nov 24
16°C | 5°C
S 14 km/h
14 km/h2.7 mm
partly cloudy and rain
Mon Nov 25
15°C | 8°C
N 7 km/h
7 km/h11 mm
overcast and heavy rain
