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

79°F

26°C

Humidity 54%
Wind Speed WSW 9 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 01 Sep 03:00 PM PDT
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Mostly clear, with a low around 64. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 65. West wind around 5 mph becoming south after midnight.

    Low: 65 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Southwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers, mainly before 11am. Mostly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 64. West wind 5 to 10 mph becoming light and variable in the evening.
Wednesday
Sunny, with a high near 78. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 65. West wind around 5 mph becoming south after midnight.
Thursday
Mostly sunny, with a high near 77. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 65. Southwest wind 5 to 10 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 65.
Saturday
A chance of showers, mainly before 11am. Mostly sunny, with a high near 81.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 84.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 69.
Labor Day
A slight chance of showers. Mostly sunny, with a high near 83.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 68.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.67°N 117.92°W (Elev. 3 ft)
Last Update:
11:24 am PDT Sep 1, 2026
Forecast Valid:
3pm PDT Sep 1, 2026-6pm PDT Sep 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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