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.

Clear

72°F

22°C

Humidity 56%
Wind Speed SW 13 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 14 Mar 01:20 PM PDT
Extended Forecast for

Costa Mesa CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. South wind around 10 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 52. South wind around 5 mph becoming calm after midnight.

    Low: 52 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog between 8am and 11am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53. Southwest wind around 5 mph becoming calm after midnight.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85. Light southwest wind becoming west 5 to 10 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. South wind around 10 mph.
Tonight
Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 52. South wind around 5 mph becoming calm after midnight.
Sunday
Patchy fog between 8am and 11am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 53. Southwest wind around 5 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 85. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.65°N 117.89°W (Elev. 3 ft)
Last Update:
12:54 pm PDT Mar 14, 2026
Forecast Valid:
1pm PDT Mar 14, 2026-6pm PDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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