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

63°F

17°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 57°F (14°C)
Visibility 7.00 mi
Last update 08 Apr 03:20 AM PDT
Extended Forecast for

Costa Mesa CA

  • Overnight

    Overnight: Partly cloudy, with a low around 55. Southeast wind around 5 mph becoming calm.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 74. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 56. Southwest wind 5 to 10 mph becoming southeast after midnight.

    Low: 56 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 74. Southeast wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 74 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. West wind 5 to 10 mph.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 68.

    High: 68 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: A chance of showers after 11pm. Partly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 55. Southeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 74. Light and variable wind becoming south 5 to 10 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 56. Southwest wind 5 to 10 mph becoming southeast after midnight.
Thursday
Partly sunny, with a high near 74. Southeast wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 57. West wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 71.
Friday Night
A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 57. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 68.
Saturday Night
A chance of showers after 11pm. Partly cloudy, with a low around 54.
Sunday
A chance of showers, mainly before 11am. Partly sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.67°N 117.92°W (Elev. 3 ft)
Last Update:
1:11 am PDT Apr 8, 2026
Forecast Valid:
3am PDT Apr 8, 2026-6pm PDT Apr 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation