Average monthly snow and rainfall in San Francisco (millimeter)
- A lot of rain (rainy season) falls in the months: January, February and December.
- San Francisco has dry periods in May, June, July, August and September.
- On average, December is the wettest month.
- On average, July is the driest month.
- The average amount of annual precipitation is: 600.0 mm (23.62 in)
Show average precipitation in San Francisco in Inches »
More climate information
Weather and Climate offers all the information you need to know about the climate in San Francisco.
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