San Mateo, California Weather:
Saturday, December 19, 2026
Sunny with a Chance of Thunderstorms
Day 57°
Night 48°
Precipitation 91 %
Wind 6 mph
Weather Forecast History
Last Year's Weather on This Day (December 19, 2025)
Rainy Weather

Day

64°

Night

54°

Wind

6 mph

Precipitation

91 %