Fullerton, California Weather:
Sunday, May 17, 2026
Cloudy Weather
Day 75°
Night 59°
Precipitation 12 %
Wind 6 mph
Weather Forecast History
Last Year's Weather on This Day (May 17, 2025)
Cloudy Weather

Day

66°

Night

55°

Wind

8 mph

UV Index

3

Precipitation

25 %