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.

Mostly Cloudy

64°F

18°C

Humidity 72%
Wind Speed N 0 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Nov 09:05 AM PST
Extended Forecast for

Costa Mesa CA

  • Today

    Today: Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 66. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Heavy Rain

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 51. West wind 5 to 10 mph becoming light northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Heavy Rain
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 61. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 10pm. Partly cloudy, with a low around 49. Calm wind becoming east around 5 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 62. Calm wind becoming west around 5 mph in the afternoon.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 50.

    Low: 50 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers after 10am. Partly sunny, with a high near 62. Chance of precipitation is 20%.

    High: 62 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly before 10am. Partly sunny, with a high near 65.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

Today
Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 66. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 10pm, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 51. West wind 5 to 10 mph becoming light northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 61. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A slight chance of showers before 10pm. Partly cloudy, with a low around 49. Calm wind becoming east around 5 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 62. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 50.
Thursday
A slight chance of showers after 10am. Partly sunny, with a high near 62. Chance of precipitation is 20%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 51.
Friday
A chance of showers, mainly before 10am. Partly sunny, with a high near 65.
Friday Night
A slight chance of showers before 10pm. Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.69°N 117.92°W (Elev. 3 ft)
Last Update:
1:24 am PST Nov 17, 2025
Forecast Valid:
9am PST Nov 17, 2025-6pm PST Nov 23, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation