San Francisco, California Weather:
Thursday, September 17, 2026
Cloudy Weather
Day 72°
Night 57°
Precipitation 25 %
Wind 12 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 17, 2025)
Cloudy Night

Day

75°

Night

63°

Wind

9 mph

Precipitation

25 %