Hourly Weather Forecast - Fullerton, CA

12 AM
56°F
0%
2mph
NE
Cloudy
Humidity
71%
Feels like
56°F
Dew Point
47°F
1 AM
55°F
0%
2mph
NE
Cloudy
Humidity
70%
Feels like
55°F
Dew Point
46°F
2 AM
55°F
0%
2mph
NE
Cloudy
Humidity
70%
Feels like
55°F
Dew Point
45°F
3 AM
54°F
0%
3mph
NE
Cloudy
Humidity
69%
Feels like
54°F
Dew Point
44°F
4 AM
53°F
0%
3mph
NE
Cloudy
Humidity
69%
Feels like
53°F
Dew Point
43°F
5 AM
53°F
0%
3mph
NE
Cloudy
Humidity
69%
Feels like
53°F
Dew Point
43°F
6 AM
54°F
0%
3mph
NE
Cloudy
Humidity
68%
Feels like
54°F
Dew Point
43°F
6:49 AM
7 AM
56°F
0%
3mph
NE
Cloudy
Humidity
62%
Feels like
56°F
Dew Point
43°F
8 AM
60°F
0%
3mph
ENE
Cloudy
Humidity
55%
Feels like
60°F
Dew Point
44°F
9 AM
65°F
0%
2mph
NE
Partly Cloudy
Humidity
48%
Feels like
65°F
Dew Point
44°F
10 AM
69°F
0%
2mph
NE
Partly Cloudy
Humidity
42%
Feels like
69°F
Dew Point
45°F
11 AM
72°F
0%
2mph
NNW
Mostly Sunny
Humidity
37%
Feels like
72°F
Dew Point
45°F
12 PM
74°F
0%
2mph
W
Mostly Sunny
Humidity
35%
Feels like
74°F
Dew Point
45°F
1 PM
75°F
0%
3mph
W
Mostly Sunny
Humidity
34%
Feels like
75°F
Dew Point
46°F
2 PM
75°F
0%
4mph
WSW
Mostly Sunny
Humidity
37%
Feels like
75°F
Dew Point
47°F
3 PM
72°F
0%
4mph
WSW
Mostly Sunny
Humidity
43%
Feels like
72°F
Dew Point
49°F
4 PM
68°F
0%
3mph
WSW
Mostly Sunny
Humidity
52%
Feels like
68°F
Dew Point
50°F
4:44 PM
5 PM
64°F
0%
3mph
WSW
Mostly Clear
Humidity
61%
Feels like
64°F
Dew Point
51°F
6 PM
62°F
0%
2mph
WSW
Clear
Humidity
67%
Feels like
62°F
Dew Point
51°F
7 PM
60°F
0%
2mph
W
Clear
Humidity
70%
Feels like
60°F
Dew Point
50°F
8 PM
59°F
0%
2mph
NNW
Mostly Clear
Humidity
68%
Feels like
59°F
Dew Point
49°F
9 PM
59°F
0%
2mph
ENE
Partly Cloudy
Humidity
66%
Feels like
59°F
Dew Point
47°F
10 PM
58°F
0%
2mph
ENE
Partly Cloudy
Humidity
64%
Feels like
58°F
Dew Point
46°F
11 PM
58°F
0%
3mph
ENE
Partly Cloudy
Humidity
62%
Feels like
58°F
Dew Point
45°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide