San Mateo, California Weather:
Wednesday, August 19, 2026
Cloudy Weather
Day 70°
Night 55°
Precipitation 20 %
Wind 4 mph
UV Index (0 - 11+) 9
Weather Forecast History
Last Year's Weather on This Day (August 19, 2025)
Cloudy Night

Day

82°

Night

57°

Wind

8 mph

Precipitation

0 %