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

59°F

15°C

Humidity 77%
Wind Speed ESE 3 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 29 Nov 10:20 PM PST
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 65. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 65 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 49. South wind around 5 mph becoming calm.

    Low: 49 °F

    Patchy Fog

  • Monday

    Monday: Sunny, with a high near 72. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. Calm wind becoming south around 5 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 52.

    Low: 52 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A slight chance of showers. Partly sunny, with a high near 65.

    High: 65 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly before 4am. Partly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 51. Calm wind.
Sunday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 65. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 49. South wind around 5 mph becoming calm.
Monday
Sunny, with a high near 72. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 49. Calm wind becoming south around 5 mph.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Increasing clouds, with a low around 52.
Wednesday
A slight chance of showers. Partly sunny, with a high near 65.
Wednesday Night
A chance of showers, mainly before 4am. Partly cloudy, with a low around 50.
Thursday
A slight chance of showers before 10am. Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.69°N 117.92°W (Elev. 3 ft)
Last Update:
7:23 pm PST Nov 29, 2025
Forecast Valid:
10pm PST Nov 29, 2025-6pm PST Dec 6, 2025
 
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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