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Fullerton, California Weather:
Saturday, February 21, 2026
Sunny Weather
Day 64°
Night 45°
Precipitation 5 %
Wind 5 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (February 21, 2025)
Cloudy Weather

Day

77°

Night

48°

Wind

6 mph

UV Index

4

Precipitation

40 %