San Mateo, California Weather:
Sunday, May 31, 2026
Cloudy Weather
Day 66°
Night 48°
Precipitation 0 %
Wind 9 mph
Weather Forecast History
Last Year's Weather on This Day (May 31, 2025)
Sunny Weather

Day

79°

Night

54°

Wind

9 mph

UV Index

11

Precipitation

0 %