National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

John Wayne-Orange County Airport (KSNA)

Lat: 33.6798°NLon: 117.8674°WElev: 39.0ft.

Mostly Cloudy

73°F

23°C

Humidity 78%
Wind Speed SW 6 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 10 Aug 07:20 PM PDT
Extended Forecast for

Costa Mesa CA

Coastal Flood Advisory until August 12, 11:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until August 12, 11:00pm

    NOW until 11:00pm Wed

    Coastal Flood Advisory

  • Tonight

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 81 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 68. Southwest wind 5 to 10 mph becoming light after midnight.

    Low: 68 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 79. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 79 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 67. Southwest wind 5 to 10 mph becoming light south after midnight.

    Low: 67 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 77.

    High: 77 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 81. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 68. Southwest wind 5 to 10 mph becoming light after midnight.
Wednesday
Partly sunny, with a high near 79. Light southwest wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 67. Southwest wind 5 to 10 mph becoming light south after midnight.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 77.
Thursday Night
Mostly cloudy, with a low around 66.
Friday
Partly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Increasing clouds, with a low around 65.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 78.
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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:
12:12 pm PDT Aug 10, 2026
Forecast Valid:
7pm PDT Aug 10, 2026-6pm PDT Aug 17, 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