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.

Overcast

70°F

21°C

Humidity 88%
Wind Speed N 0 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 02 Aug 03:00 AM PDT
Extended Forecast for

Costa Mesa CA

Heat Advisory August 2, 03:28am until August 2, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 2, 03:28am until August 2, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Overnight

    Low: 68 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Partly Cloudy

  • Monday

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

    High: 82 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm after midnight.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 81.

    High: 81 °F

    Becoming
    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 68. Calm wind.
Sunday
Mostly sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 68.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.67°N 117.89°W (Elev. 13 ft)
Last Update:
12:51 am PDT Aug 2, 2026
Forecast Valid:
3am PDT Aug 2, 2026-6pm PDT Aug 8, 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