Fullerton, California Weather:
Sunday, April 12, 2026
Sunny Weather
Day 70°
Night 48°
Precipitation 5 %
Wind 1 mph
UV Index (0 - 11+) 9
Weather Forecast History
Last Year's Weather on This Day (April 12, 2025)
Cloudy Weather

Day

73°

Night

54°

Wind

6 mph

UV Index

9

Precipitation

1 %