San Jose, California Weather:
Friday, September 18, 2026
Cloudy Weather
Day 79°
Night 57°
Precipitation 1 %
Wind 8 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Rainy Weather

Day

84°

Night

64°

Wind

5 mph

Precipitation

96 %