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.

Rain

65°F

18°C

Humidity 87%
Wind Speed W 3 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 31 Mar 11:53 PM PDT
Extended Forecast for

Costa Mesa CA

  • Overnight

    Overnight: A chance of showers. Mostly cloudy, with a low around 57. South wind 5 to 10 mph becoming west. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 68. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 56. West wind 5 to 10 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 67. Southwest wind 5 to 10 mph.

    High: 67 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. Southwest wind around 5 mph becoming southeast after midnight.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers. Mostly cloudy, with a low around 57. South wind 5 to 10 mph becoming west. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 68. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 56. West wind 5 to 10 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 67. Southwest wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 55. Southwest wind around 5 mph becoming southeast after midnight.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly cloudy, with a high near 72.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.64°N 117.91°W (Elev. 13 ft)
Last Update:
11:23 pm PDT Mar 31, 2026
Forecast Valid:
12am PDT Apr 1, 2026-6pm PDT Apr 7, 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