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

76°F

24°C

Humidity 71%
Wind Speed SW 6 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 04 Aug 10:53 AM PDT
Extended Forecast for

Costa Mesa CA

  • Today

    Today: Sunny, with a high near 80. Southwest wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 80. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 80 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68. West wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy through mid morning, then becoming sunny, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 68.

    Low: 68 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 80.

    High: 80 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 69.

    Low: 69 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 82.

    High: 82 °F

    Becoming
    Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Southwest wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 80. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 68. West wind around 5 mph becoming calm in the evening.
Thursday
Mostly cloudy through mid morning, then becoming sunny, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 68.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 80.
Friday Night
Increasing clouds, with a low around 69.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 82.
Saturday Night
Increasing clouds, with a low around 69.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 69.
Monday
Mostly sunny, with a high near 81.
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:
3:01 am PDT Aug 4, 2026
Forecast Valid:
11am PDT Aug 4, 2026-6pm PDT Aug 10, 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