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

75°F

24°C

Humidity 73%
Wind Speed WSW 3 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 03 Aug 10:00 AM PDT
Extended Forecast for

Costa Mesa CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 81. Southwest wind 5 to 10 mph.

    High: 81 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. South wind 5 to 10 mph becoming light and variable after midnight.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 81.

    High: 81 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 68.

    Low: 68 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 82.

    High: 82 °F

    Becoming
    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 81. Southwest wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 67. South wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
Mostly sunny, with a high near 81. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 81.
Thursday Night
Increasing clouds, with a low around 68.
Friday
Partly sunny, then gradually becoming sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.65°N 117.89°W (Elev. 3 ft)
Last Update:
5:27 am PDT Aug 3, 2026
Forecast Valid:
10am PDT Aug 3, 2026-6pm PDT Aug 9, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation