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

66°F

19°C

Humidity 88%
Wind Speed SW 4 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 08 Jul 12:00 AM PDT
Extended Forecast for

Costa Mesa CA

  • Overnight

    Overnight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 65. South wind around 5 mph becoming calm.

    Low: 65 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, sunny, with a high near 78. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Widespread haze between 8am and 2pm. Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77. Light southeast wind becoming south 5 to 10 mph in the morning.

    High: 77 °F

    Patchy Fog
    then Haze

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 66. South wind around 5 mph.

    Low: 66 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 66.

    Low: 66 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 65. South wind around 5 mph becoming calm.
Wednesday
Patchy fog before 11am. Otherwise, sunny, with a high near 78. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Widespread haze between 8am and 2pm. Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77. Light southeast wind becoming south 5 to 10 mph in the morning.
Thursday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 66. South wind around 5 mph.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77.
Friday Night
Increasing clouds, with a low around 66.
Saturday
Partly sunny, with a high near 76.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
A slight chance of showers before 11am. Mostly cloudy, with a high near 77.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.67°N 117.92°W (Elev. 3 ft)
Last Update:
12:04 am PDT Jul 8, 2026
Forecast Valid:
12am PDT Jul 8, 2026-6pm PDT Jul 14, 2026
 
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Additional Resources

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Chance of Precipitation