Last 7 days
Today
20° / 14° High / Low (°C)
94% Humidity
22% Rain probability
Rain Condition
~3h Rain duration
What this means
In San Francisco on 21 Oct 2026, rain is expected: 22% chance, up to 5.1 mm forecast (source: Open-Meteo).
Moderate rain is expected today for around 3 hours — 22% probability, up to 5.1mm forecast. An umbrella is the right call.
Rain season
San Francisco's rain falls almost exclusively November through April, in Pacific fronts that can be sharp and heavy. Summer (May–October) is reliably dry but often cold and foggy, particularly in the morning — July fog is as common as July sun. Annual totals average 550mm, but El Niño winters can nearly double that.
Elsewhere in United States