Historical weather statistics for San Francisco, United States
Typical weather in San Francisco
September is typically the warmest month, with median daily highs near 22.5 °C and lows near 13.3 °C. December is typically the coolest month, with median daily highs near 13.9 °C and lows near 6.4 °C. Median precipitation probability is highest in December, at about 32.0 %. Median relative humidity reaches its annual high in January, at about 96.0 %. These are historical climate statistics, not a day-to-day forecast.
Monthly values are medians of historical daily weather statistics. They describe typical conditions and are not a forecast.
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| Month | Daily max temperature (°C) | Daily min temperature (°C) | Wind chance (%) | Humidity (%) | Precipitation chance (%) | Snow depth (cm) |
|---|---|---|---|---|---|---|
| January | 14.2 °C | 6.2 °C | 18.2 % | 96.0 % | 23.3 % | 0.0 cm |
| February | 14.9 °C | 6.8 °C | 34.8 % | 95.2 % | 27.7 % | 0.0 cm |
| March | 16.1 °C | 8.2 °C | 46.4 % | 94.8 % | 23.7 % | 0.0 cm |
| April | 16.7 °C | 8.9 °C | 60.0 % | 93.6 % | 8.2 % | 0.0 cm |
| May | 18.6 °C | 10.4 °C | 67.3 % | 92.9 % | 1.0 % | 0.0 cm |
| June | 21.2 °C | 11.8 °C | 63.4 % | 92.4 % | 0.0 % | 0.0 cm |
| July | 21.5 °C | 12.8 °C | 30.0 % | 93.5 % | 0.0 % | 0.0 cm |
| August | 21.9 °C | 13.5 °C | 22.7 % | 93.8 % | 0.0 % | 0.0 cm |
| September | 22.5 °C | 13.3 °C | 25.0 % | 93.2 % | 0.0 % | 0.0 cm |
| October | 21.2 °C | 12.1 °C | 16.8 % | 93.7 % | 6.7 % | 0.0 cm |
| November | 17.2 °C | 9.2 °C | 16.1 % | 94.5 % | 17.8 % | 0.0 cm |
| December | 13.9 °C | 6.4 °C | 21.8 % | 95.7 % | 32.0 % | 0.0 cm |