Hourly Weather Forecast - Costa Mesa, CA

6 AM
54°F
0%
4mph
E
Clear
Humidity
67%
Feels like
54°F
Dew Point
44°F
6:45 AM
7 AM
57°F
0%
3mph
E
Sunny
Humidity
61%
Feels like
57°F
Dew Point
44°F
8 AM
61°F
0%
3mph
E
Sunny
Humidity
52%
Feels like
61°F
Dew Point
44°F
9 AM
67°F
0%
2mph
NNW
Sunny
Humidity
45%
Feels like
67°F
Dew Point
44°F
10 AM
71°F
0%
2mph
WNW
Sunny
Humidity
39%
Feels like
71°F
Dew Point
45°F
11 AM
74°F
0%
2mph
W
Sunny
Humidity
35%
Feels like
74°F
Dew Point
45°F
12 PM
76°F
0%
3mph
WSW
Sunny
Humidity
34%
Feels like
76°F
Dew Point
46°F
1 PM
77°F
0%
3mph
WSW
Sunny
Humidity
34%
Feels like
77°F
Dew Point
46°F
2 PM
76°F
0%
3mph
WSW
Sunny
Humidity
36%
Feels like
76°F
Dew Point
47°F
3 PM
73°F
0%
3mph
WSW
Sunny
Humidity
41%
Feels like
73°F
Dew Point
48°F
4 PM
71°F
0%
3mph
WSW
Sunny
Humidity
47%
Feels like
71°F
Dew Point
49°F
4:43 PM
5 PM
68°F
0%
3mph
WSW
Mostly Clear
Humidity
53%
Feels like
68°F
Dew Point
50°F
6 PM
67°F
0%
2mph
W
Mostly Clear
Humidity
56%
Feels like
67°F
Dew Point
50°F
7 PM
65°F
0%
2mph
W
Mostly Clear
Humidity
59%
Feels like
65°F
Dew Point
50°F
8 PM
63°F
0%
2mph
SW
Partly Cloudy
Humidity
61%
Feels like
63°F
Dew Point
50°F
9 PM
62°F
0%
3mph
S
Partly Cloudy
Humidity
63%
Feels like
62°F
Dew Point
49°F
10 PM
60°F
0%
3mph
S
Clear
Humidity
65%
Feels like
60°F
Dew Point
48°F
11 PM
59°F
0%
2mph
S
Clear
Humidity
67%
Feels like
59°F
Dew Point
47°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

Today's Weather Outlook

Today'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