National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

John Wayne-Orange County Airport (KSNA)

Lat: 33.6798°NLon: 117.8674°WElev: 39.0ft.

Partly Cloudy

70°F

21°C

Humidity 43%
Wind Speed SW 9 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 23 Apr 03:53 PM PDT
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Partly cloudy, with a low around 56. West wind 5 to 15 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70. Southeast wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. Southwest wind 5 to 10 mph.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 55. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. West wind 5 to 15 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 70. Southeast wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 55. Southwest wind 5 to 10 mph.
Saturday
Partly sunny, with a high near 66. West wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 55. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 53.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.66°N 117.94°W (Elev. 7 ft)
Last Update:
11:49 am PDT Apr 23, 2026
Forecast Valid:
4pm PDT Apr 23, 2026-6pm PDT Apr 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation