San Francisco, California Weather:
Wednesday, January 21, 2026
Cloudy Weather
Day 61°
Night 50°
Precipitation 10 %
Wind 10 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (January 21, 2025)
Cloudy Weather

Day

61°

Night

41°

Wind

4 mph

UV Index

3

Precipitation

0 %