Fullerton, California Weather:
Wednesday, March 25, 2026
Sunny Weather
Day 82°
Night 59°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 7
Weather Forecast History
Last Year's Weather on This Day (March 25, 2025)
Cloudy Weather

Day

72°

Night

55°

Wind

6 mph

UV Index

7

Precipitation

41 %