Hourly Weather Forecast - Costa Mesa, CA

10 AM
66°F
0%
2mph
SSW
Sunny
Humidity
48%
Feels like
66°F
Dew Point
46°F
11 AM
70°F
0%
2mph
SW
Sunny
Humidity
44%
Feels like
70°F
Dew Point
47°F
12 PM
72°F
0%
2mph
WSW
Sunny
Humidity
42%
Feels like
72°F
Dew Point
47°F
1 PM
73°F
0%
3mph
WSW
Sunny
Humidity
41%
Feels like
73°F
Dew Point
48°F
2 PM
73°F
0%
3mph
WSW
Sunny
Humidity
43%
Feels like
73°F
Dew Point
49°F
3 PM
71°F
0%
3mph
WSW
Sunny
Humidity
47%
Feels like
71°F
Dew Point
50°F
4 PM
69°F
0%
3mph
W
Sunny
Humidity
52%
Feels like
69°F
Dew Point
50°F
4:43 PM
5 PM
67°F
0%
3mph
W
Clear
Humidity
55%
Feels like
67°F
Dew Point
50°F
6 PM
66°F
0%
2mph
WNW
Clear
Humidity
56%
Feels like
66°F
Dew Point
50°F
7 PM
65°F
0%
3mph
NW
Clear
Humidity
56%
Feels like
65°F
Dew Point
49°F
8 PM
64°F
0%
3mph
NNW
Clear
Humidity
55%
Feels like
64°F
Dew Point
47°F
9 PM
62°F
0%
3mph
NNW
Clear
Humidity
54%
Feels like
62°F
Dew Point
46°F
10 PM
61°F
0%
3mph
N
Clear
Humidity
54%
Feels like
61°F
Dew Point
44°F
11 PM
59°F
0%
3mph
NNE
Clear
Humidity
55%
Feels like
59°F
Dew Point
43°F

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

A fast-moving series of atmospheric rivers continue to drench the Pacific Northwest today through Thursday.

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

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