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.

Overcast

63°F

17°C

Humidity 82%
Wind Speed SSW 3 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 24 Mar 07:05 AM PDT
Extended Forecast for

Costa Mesa CA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 75. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 75 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. Light northwest wind becoming southwest 5 to 10 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind around 5 mph becoming calm after midnight.

    Low: 55 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 80. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 56.

    Low: 56 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 57.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 75. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tonight
Partly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 78. Light northwest wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind around 5 mph becoming calm after midnight.
Thursday
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 80. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 56.
Friday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 81.
Friday Night
Increasing clouds, with a low around 57.
Saturday
Partly sunny, with a high near 82.
Saturday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57.
Sunday
Patchy fog. Otherwise, sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.69°N 117.92°W (Elev. 3 ft)
Last Update:
12:25 am PDT Mar 24, 2026
Forecast Valid:
7am PDT Mar 24, 2026-6pm PDT Mar 30, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation