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

54°F

12°C

Humidity 62%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 Jan 02:35 AM PST
Extended Forecast for

Costa Mesa CA

  • Overnight

    Overnight: Mostly clear, with a low around 51. South wind around 5 mph.

    Low: 51 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 70. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50. Calm wind becoming south around 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. Southwest wind around 5 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 52.

    Low: 52 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Patchy Fog

Detailed Forecast

Overnight
Mostly clear, with a low around 51. South wind around 5 mph.
M.L.King Day
Sunny, with a high near 70. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 50. Calm wind becoming south around 5 mph.
Tuesday
Mostly sunny, with a high near 71. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 50. Southwest wind around 5 mph becoming calm after midnight.
Wednesday
Mostly cloudy, with a high near 68.
Wednesday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 52.
Thursday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66.
Thursday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 50.
Friday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 65.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 51.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.66°N 117.94°W (Elev. 7 ft)
Last Update:
2:29 am PST Jan 19, 2026
Forecast Valid:
2am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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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