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San Mateo, California Weather:
Monday, December 15, 2025
Cloudy Weather
Day 61°
Night 45°
Precipitation 20 %
Wind 5 mph
UV Index (0 - 11+) 2
Weather Forecast History
Last Year's Weather on This Day (December 15, 2024)
Cloudy Night

Day

57°

Night

45°

Wind

4 mph

Precipitation

25 %