Average monthly rainy days in San Francisco
- San Francisco has dry periods in June, July, August and September.
- On average, December is the most rainy.
- On average, July has the least rainy days.
- The average annual amount of rainy days is: 73.0 days
More climate information
Weather and Climate offers all the information you need to know about the climate in San Francisco.
We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in United States of America and climate and forecast data for all other countries in the world.