San Mateo, California Weather:
Tuesday, September 22, 2026
Cloudy Weather
Day 73°
Night 57°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 22, 2025)
Night

Day

86°

Night

57°

Wind

5 mph

Precipitation

0 %