❮
Today Tomorrow Hourly 7 days 30 days December
❯
Fullerton, California Weather:
Thursday, December 18, 2025
Cloudy Weather
Day 77°
Night 48°
Precipitation 4 %
Wind 4 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (December 18, 2024)
Sunny Weather

Day

82°

Night

48°

Wind

6 mph

UV Index

3

Precipitation

0 %