Fullerton, California Weather:
Wednesday, May 27, 2026
Partly Sunny with Showers
Day 72°
Night 55°
Precipitation 65 %
Wind 8 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (May 27, 2025)
Cloudy Weather

Day

77°

Night

59°

Wind

6 mph

UV Index

11

Precipitation

0 %