December weather in San Jose, United States
Averages from 155 days in December across 2020–2024.
Typical conditions
| Average high | 15°C |
|---|---|
| Average low | 6.8°C |
| Average mean | 10.7°C |
| Total precipitation | 701.5 mm |
| Rainy days | 73 |
| Average precipitation hours | 4.4 h |
| Average max wind speed | 13 km/h |
| Average sunshine | 7 h/day |
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