September weather in San Jose, United States
Averages from 150 days in September across 2020–2024.
Typical conditions
| Average high | 28.6°C |
|---|---|
| Average low | 14.9°C |
| Average mean | 20.5°C |
| Total precipitation | 38.2 mm |
| Rainy days | 30 |
| Average precipitation hours | 0.6 h |
| Average max wind speed | 20.9 km/h |
| Average sunshine | 11.6 h/day |
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