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

67°F

19°C

Humidity 18%
Wind Speed NE 10 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 29 Dec 05:53 PM PST
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Northeast wind around 10 mph.

    Low: 54 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 74. Northeast wind 5 to 10 mph.

    High: 74 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 4am. Mostly cloudy, with a low around 58. Northeast wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 66. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. The rain could be heavy at times. Low around 57. East wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 57 °F

    Heavy Rain

  • New Year's Day

    New Year's Day: Showers. The rain could be heavy at times. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. Northeast wind around 10 mph.
Tuesday
Partly sunny, with a high near 74. Northeast wind 5 to 10 mph.
Tuesday Night
A chance of showers after 4am. Mostly cloudy, with a low around 58. Northeast wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 66. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers. The rain could be heavy at times. Low around 57. East wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
New Year's Day
Showers. The rain could be heavy at times. High near 66. Chance of precipitation is 90%.
Thursday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 65.
Friday Night
A chance of showers. Mostly cloudy, with a low around 55.
Saturday
Showers likely. Mostly cloudy, with a high near 64.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 52.
Sunday
A chance of showers. Partly sunny, with a high near 63.
Sunday Night
A chance of showers. Partly cloudy, with a low around 50.
Monday
A chance of showers. Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.66°N 117.94°W (Elev. 7 ft)
Last Update:
12:55 pm PST Dec 29, 2025
Forecast Valid:
6pm PST Dec 29, 2025-6pm PST Jan 5, 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