San Mateo, California Weather:
Saturday, September 5, 2026
Cloudy Weather
Day 75°
Night 57°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 5, 2025)
Cloudy Night

Day

73°

Night

59°

Wind

9 mph

Precipitation

0 %