San Francisco, California weather in April

Averages from 2021–2025 (150 days of record).

Average high: 60°F
Average low: 49°F
Rainy days: ~3 per month
Total precipitation: 0.9 in
Warmest recorded: 84°F
Coldest recorded: 41°F

Expect April days in San Francisco, California to top out around 60°F and cool to about 49°F overnight, with roughly 3 days of measurable rain across the month. In recent years April has ranged from 41°F to 84°F.

Other months

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