Fullerton, California Weather:
Monday, October 12, 2026
Sunny Weather
Day 79°
Night 61°
Precipitation 0 %
Wind 2 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (October 12, 2025)
Cloudy Weather

Day

77°

Night

57°

Wind

5 mph

UV Index

50

Precipitation

0 %