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.

Partly Cloudy

64°F

18°C

Humidity 45%
Wind Speed SW 10 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 13 Apr 06:20 PM PDT
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Mostly clear, with a low around 52. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71. Light and variable wind becoming west 5 to 10 mph in the morning.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. West wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 71.

    High: 71 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 52. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 71. Light and variable wind becoming west 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 53. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 54. West wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 54.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 54.
Monday
Mostly sunny, with a high near 71.
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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:
4:12 pm PDT Apr 13, 2026
Forecast Valid:
6pm PDT Apr 13, 2026-6pm PDT Apr 20, 2026
 
Forecast Discussion
 
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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