San Jose, California weather in March

Averages from 2021–2025 (155 days of record).

Average high: 63°F
Average low: 45°F
Rainy days: ~11 per month
Total precipitation: 3.7 in
Warmest recorded: 86°F
Coldest recorded: 34°F

Expect March days in San Jose, California to top out around 63°F and cool to about 45°F overnight, with roughly 11 days of measurable rain across the month. In recent years March has ranged from 34°F to 86°F.

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Current San Jose, California forecast → · Historical data by Open-Meteo (ERA5).