Hourly Weather Forecast - Fullerton, CA

12 AM
60°F
90%
7mph
SE
Rain Showers
Humidity
100%
Feels like
60°F
Dew Point
60°F
1 AM
60°F
90%
6mph
SE
Rain Showers
Humidity
100%
Feels like
60°F
Dew Point
60°F
2 AM
61°F
90%
6mph
SE
Rain Showers
Humidity
100%
Feels like
61°F
Dew Point
61°F
3 AM
61°F
90%
6mph
SSE
Rain Showers
Humidity
100%
Feels like
61°F
Dew Point
61°F
4 AM
61°F
90%
7mph
SSE
Light Rain
Humidity
100%
Feels like
61°F
Dew Point
61°F
5 AM
61°F
90%
7mph
SSE
Rain Showers
Humidity
100%
Feels like
61°F
Dew Point
61°F
6 AM
61°F
90%
7mph
SSE
Rain Showers
Humidity
100%
Feels like
61°F
Dew Point
61°F
6:54 AM
7 AM
62°F
100%
7mph
SSE
Rain Showers
Humidity
100%
Feels like
62°F
Dew Point
62°F
8 AM
62°F
100%
8mph
S
Rain Showers
Humidity
100%
Feels like
62°F
Dew Point
62°F
9 AM
62°F
100%
9mph
S
Rain Showers
Humidity
100%
Feels like
62°F
Dew Point
62°F
10 AM
62°F
100%
9mph
S
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
11 AM
61°F
100%
10mph
S
Rain
Humidity
100%
Feels like
61°F
Dew Point
61°F
12 PM
62°F
100%
10mph
SSW
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
1 PM
62°F
100%
9mph
SSW
Rain
Humidity
99%
Feels like
62°F
Dew Point
61°F
2 PM
61°F
100%
9mph
SSW
Rain
Humidity
98%
Feels like
61°F
Dew Point
61°F
3 PM
60°F
100%
8mph
SSW
Rain
Humidity
100%
Feels like
60°F
Dew Point
60°F
4 PM
58°F
100%
7mph
SSW
Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
4:48 PM
5 PM
58°F
100%
5mph
SSW
Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
6 PM
58°F
100%
4mph
SSW
Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
7 PM
58°F
100%
4mph
S
Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
8 PM
58°F
100%
4mph
S
Rain
Humidity
99%
Feels like
58°F
Dew Point
58°F
9 PM
59°F
100%
3mph
SSE
Rain
Humidity
97%
Feels like
59°F
Dew Point
58°F
10 PM
59°F
100%
3mph
SSE
Rain
Humidity
96%
Feels like
59°F
Dew Point
58°F
11 PM
59°F
100%
3mph
SE
Rain
Humidity
97%
Feels like
59°F
Dew Point
58°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide