Hourly Weather Forecast - Fullerton, CA

12 AM
60°F
100%
9mph
SE
Light Rain
Humidity
100%
Feels like
60°F
Dew Point
60°F
1 AM
61°F
100%
9mph
SE
Light Rain
Humidity
100%
Feels like
61°F
Dew Point
61°F
2 AM
61°F
100%
10mph
SE
Rain
Humidity
100%
Feels like
61°F
Dew Point
61°F
3 AM
62°F
100%
11mph
SSE
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
4 AM
62°F
100%
11mph
SSE
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
5 AM
62°F
100%
12mph
SSE
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
6 AM
62°F
100%
13mph
SSE
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
6:54 AM
7 AM
62°F
100%
13mph
SSE
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
8 AM
62°F
100%
12mph
SSE
Rain
Humidity
100%
Feels like
62°F
Dew Point
62°F
9 AM
61°F
100%
11mph
S
Rain
Humidity
100%
Feels like
61°F
Dew Point
61°F
10 AM
61°F
100%
10mph
S
Rain
Humidity
100%
Feels like
61°F
Dew Point
61°F
11 AM
60°F
100%
10mph
S
Thunderstorms
Humidity
100%
Feels like
60°F
Dew Point
60°F
12 PM
60°F
100%
9mph
S
Thunderstorms
Humidity
100%
Feels like
60°F
Dew Point
60°F
1 PM
60°F
100%
9mph
S
Rain
Humidity
100%
Feels like
60°F
Dew Point
60°F
2 PM
60°F
100%
8mph
S
Rain
Humidity
100%
Feels like
60°F
Dew Point
60°F
3 PM
59°F
100%
8mph
S
Light Rain
Humidity
100%
Feels like
59°F
Dew Point
59°F
4 PM
58°F
100%
7mph
S
Light Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
4:48 PM
5 PM
58°F
90%
7mph
S
Light Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
6 PM
58°F
90%
7mph
SSE
Rain
Humidity
100%
Feels like
58°F
Dew Point
58°F
7 PM
59°F
90%
7mph
SSE
Light Rain
Humidity
100%
Feels like
59°F
Dew Point
59°F
8 PM
59°F
90%
7mph
SSE
Light Rain
Humidity
100%
Feels like
59°F
Dew Point
59°F
9 PM
60°F
90%
8mph
SE
Rain Showers
Humidity
100%
Feels like
60°F
Dew Point
60°F
10 PM
60°F
90%
8mph
SE
Rain Showers
Humidity
100%
Feels like
60°F
Dew Point
60°F
11 PM
60°F
90%
8mph
SE
Rain Showers
Humidity
100%
Feels like
60°F
Dew Point
60°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