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

68°F

20°C

Humidity 70%
Wind Speed SW 5 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 09 Apr 09:53 AM PDT
Extended Forecast for

Costa Mesa CA

  • Today

    Today: Partly sunny, with a high near 73. South wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 57. West wind 5 to 10 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 11pm. Partly cloudy, with a low around 58. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 11am. Mostly sunny, with a high near 68. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 11am, then a slight chance of showers and thunderstorms after 11am. Partly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers after 11pm. Partly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 73. South wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Partly cloudy, with a low around 57. West wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 70. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
A chance of showers after 11pm. Partly cloudy, with a low around 58. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A slight chance of showers before 11am. Mostly sunny, with a high near 68. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm before 11am, then a slight chance of showers and thunderstorms after 11am. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Sunday Night
A slight chance of showers after 11pm. Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.66°N 117.94°W (Elev. 7 ft)
Last Update:
1:35 am PDT Apr 9, 2026
Forecast Valid:
10am PDT Apr 9, 2026-6pm PDT Apr 15, 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