September weather in San Francisco, United States
Averages from 150 days in September across 2020–2024.
Typical conditions
| Average high | 20.4°C |
|---|---|
| Average low | 14.4°C |
| Average mean | 16.8°C |
| Total precipitation | 18.9 mm |
| Rainy days | 18 |
| Average precipitation hours | 0.4 h |
| Average max wind speed | 27.4 km/h |
| Average sunshine | 11.3 h/day |
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