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.

Clear

64°F

18°C

Humidity 88%
Wind Speed S 6 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 61°F (16°C)
Visibility 9.00 mi
Last update 26 Mar 09:35 PM PDT
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm.

    Low: 55 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 81. Light northwest wind becoming west 5 to 10 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. West wind 5 to 10 mph becoming light in the evening.

    Low: 57 °F

    Patchy Fog

  • Sunday

    Sunday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 56.

    Low: 56 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 76.

    High: 76 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm.
Friday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 81. Light northwest wind becoming west 5 to 10 mph in the afternoon.
Saturday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. West wind 5 to 10 mph becoming light in the evening.
Sunday
Sunny, with a high near 80.
Sunday Night
Increasing clouds, with a low around 56.
Monday
Mostly cloudy, with a high near 76.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Mostly cloudy, with a high near 72.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 55.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 71.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.67°N 117.92°W (Elev. 3 ft)
Last Update:
11:57 am PDT Mar 26, 2026
Forecast Valid:
9pm PDT Mar 26, 2026-6pm PDT Apr 2, 2026
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation