San Mateo, California Weather:
Monday, August 31, 2026
Cloudy Weather
Day 70°
Night 57°
Precipitation 25 %
Wind 14 mph
UV Index (0 - 11+) 7
Weather Forecast History
Last Year's Weather on This Day (August 31, 2025)
Night

Day

93°

Night

59°

Wind

8 mph

Precipitation

0 %