Hourly Weather Forecast - Costa Mesa, CA

1 PM
78°F
0%
3mph
SW
Sunny
Humidity
31%
Feels like
78°F
Dew Point
44°F
2 PM
76°F
0%
3mph
SW
Sunny
Humidity
34%
Feels like
76°F
Dew Point
46°F
3 PM
74°F
0%
3mph
SW
Sunny
Humidity
39%
Feels like
74°F
Dew Point
47°F
4 PM
71°F
0%
3mph
SSW
Sunny
Humidity
46%
Feels like
71°F
Dew Point
49°F
4:43 PM
5 PM
68°F
0%
3mph
SSW
Clear
Humidity
52%
Feels like
68°F
Dew Point
50°F
6 PM
67°F
0%
2mph
SW
Clear
Humidity
56%
Feels like
67°F
Dew Point
51°F
7 PM
65°F
0%
2mph
SSW
Clear
Humidity
60%
Feels like
65°F
Dew Point
51°F
8 PM
64°F
0%
2mph
S
Clear
Humidity
62%
Feels like
64°F
Dew Point
50°F
9 PM
62°F
0%
3mph
S
Mostly Clear
Humidity
65%
Feels like
62°F
Dew Point
50°F
10 PM
60°F
0%
3mph
SSE
Mostly Clear
Humidity
67%
Feels like
60°F
Dew Point
49°F
11 PM
59°F
0%
3mph
SSE
Mostly Clear
Humidity
69%
Feels like
59°F
Dew Point
48°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

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide