Fullerton, California Weather:
Wednesday, April 1, 2026
Sunny Weather
Day 75°
Night 55°
Precipitation 20 %
Wind 2 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (April 1, 2025)
Cloudy Weather

Day

64°

Night

48°

Wind

12 mph

UV Index

8

Precipitation

5 %