Fullerton, California Weather:
Wednesday, September 2, 2026
Sunny Weather
Day 91°
Night 72°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (September 2, 2025)
Cloudy Night

Day

99°

Night

68°

Wind

5 mph

Precipitation

25 %