San Mateo, California Weather:
Wednesday, September 16, 2026
Cloudy Weather
Day 72°
Night 59°
Precipitation 1 %
Wind 12 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 16, 2025)
Cloudy Night

Day

84°

Night

57°

Wind

6 mph

Precipitation

0 %