Hourly Weather Forecast - Costa Mesa, CA

12 AM
55°F
0%
3mph
ENE
Mostly Clear
Humidity
76%
Feels like
55°F
Dew Point
47°F
1 AM
54°F
0%
3mph
E
Mostly Clear
Humidity
76%
Feels like
54°F
Dew Point
46°F
2 AM
53°F
0%
4mph
E
Clear
Humidity
75%
Feels like
53°F
Dew Point
45°F
3 AM
52°F
0%
3mph
E
Clear
Humidity
73%
Feels like
52°F
Dew Point
44°F
4 AM
51°F
0%
3mph
E
Clear
Humidity
72%
Feels like
51°F
Dew Point
42°F
5 AM
50°F
0%
3mph
E
Clear
Humidity
71%
Feels like
50°F
Dew Point
41°F
6 AM
51°F
0%
4mph
E
Clear
Humidity
70%
Feels like
51°F
Dew Point
41°F
6:49 AM
7 AM
53°F
0%
3mph
E
Sunny
Humidity
65%
Feels like
53°F
Dew Point
42°F
8 AM
58°F
0%
3mph
E
Sunny
Humidity
57%
Feels like
58°F
Dew Point
44°F
9 AM
65°F
0%
2mph
ESE
Sunny
Humidity
49%
Feels like
65°F
Dew Point
45°F
10 AM
70°F
0%
2mph
SE
Sunny
Humidity
42%
Feels like
70°F
Dew Point
46°F
11 AM
74°F
0%
2mph
SSE
Sunny
Humidity
39%
Feels like
74°F
Dew Point
47°F
12 PM
76°F
0%
3mph
SSW
Sunny
Humidity
38%
Feels like
76°F
Dew Point
49°F
1 PM
77°F
0%
4mph
SSW
Sunny
Humidity
40%
Feels like
77°F
Dew Point
50°F
2 PM
76°F
0%
4mph
SW
Sunny
Humidity
44%
Feels like
76°F
Dew Point
52°F
3 PM
73°F
0%
4mph
SW
Sunny
Humidity
52%
Feels like
73°F
Dew Point
54°F
4 PM
69°F
0%
4mph
SW
Sunny
Humidity
62%
Feels like
69°F
Dew Point
55°F
4:45 PM
5 PM
65°F
0%
4mph
SW
Clear
Humidity
71%
Feels like
65°F
Dew Point
55°F
6 PM
63°F
0%
3mph
SW
Clear
Humidity
76%
Feels like
63°F
Dew Point
55°F
7 PM
61°F
0%
3mph
SW
Clear
Humidity
79%
Feels like
61°F
Dew Point
54°F
8 PM
59°F
0%
3mph
SSW
Clear
Humidity
80%
Feels like
59°F
Dew Point
53°F
9 PM
58°F
0%
4mph
SSE
Clear
Humidity
79%
Feels like
58°F
Dew Point
51°F
10 PM
56°F
0%
4mph
SE
Clear
Humidity
79%
Feels like
56°F
Dew Point
50°F
11 PM
55°F
0%
4mph
SE
Mostly Clear
Humidity
79%
Feels like
55°F
Dew Point
49°F

Snowfall forecast through Saturday A.M.

More Snow Across the Northern U.S. into the Midwest

The parade of snow will continue across the northern U.S. and Midwest through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Rains Finally Easing Across 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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Traffic Cameras

Weather Cameras

Outdoor Sports Guide