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.

Clear

59°F

15°C

Humidity 38%
Wind Speed N 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 28 Dec 09:00 PM PST
Extended Forecast for

Costa Mesa CA

  • Tonight

    Tonight: Mostly clear, with a low around 49. Northeast wind 5 to 10 mph.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 72. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 57. Northeast wind 5 to 10 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Showers likely, mainly after 4pm. Partly sunny, with a high near 67. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. The rain could be heavy at times. Low around 55. Chance of precipitation is 80%.

    Low: 55 °F

    Heavy Rain

  • New Year's Day

    New Year's Day: Showers. Mostly cloudy, with a high near 65.

    High: 65 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 49. Northeast wind 5 to 10 mph.
Monday
Sunny, with a high near 71. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 53. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 72. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Increasing clouds, with a low around 57. Northeast wind 5 to 10 mph.
Wednesday
Showers likely, mainly after 4pm. Partly sunny, with a high near 67. Chance of precipitation is 60%.
Wednesday Night
Showers. The rain could be heavy at times. Low around 55. Chance of precipitation is 80%.
New Year's Day
Showers. Mostly cloudy, with a high near 65.
Thursday Night
Showers likely. Mostly cloudy, with a low around 56.
Friday
Showers likely. Mostly cloudy, with a high near 66.
Friday Night
Showers likely. Mostly cloudy, with a low around 54.
Saturday
Showers likely. Partly sunny, 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 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:
12:21 pm PST Dec 28, 2025
Forecast Valid:
9pm PST Dec 28, 2025-6pm PST Jan 4, 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