Fontana, California Weather:
Friday, September 4, 2026
Cloudy Weather
Day 93°
Night 66°
Precipitation 4 %
Wind 7 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (September 4, 2025)
Night

Day

97°

Night

66°

Wind

5 mph

Precipitation

0 %