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.

Overcast

64°F

18°C

Humidity 93%
Wind Speed SSE 12 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 01 Jan 07:35 AM PST
Extended Forecast for

Costa Mesa CA

Flood Watch January 1, 07:52am until January 1, 10:00pm
Flood Advisory until January 1, 09:03am
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch January 1, 07:52am until January 1, 10:00pm
    Flood Advisory until January 1, 09:03am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • New Year's Day

    High: 65 °F

    Showers

  • Tonight

    Tonight: A slight chance of showers before 10pm. Mostly cloudy, with a low around 56. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 65. East wind around 5 mph becoming south in the afternoon.

    High: 65 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers after 10pm. Mostly cloudy, with a low around 56. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly after 10am. Cloudy, with a high near 66. Southeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 10am. Cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Showers
    Likely

Detailed Forecast

New Year's Day
Showers and possibly a thunderstorm. High near 65. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
A slight chance of showers before 10pm. Mostly cloudy, with a low around 56. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.
Friday
Mostly cloudy, with a high near 65. East wind around 5 mph becoming south in the afternoon.
Friday Night
A slight chance of showers after 10pm. Mostly cloudy, with a low around 56. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, mainly after 10am. Cloudy, with a high near 66. Southeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Sunday
Showers likely, with thunderstorms also possible after 10am. Cloudy, with a high near 63. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 63.
Monday Night
A chance of showers. Cloudy, with a low around 52.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 48.
Wednesday
A chance of showers. Partly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Costa Mesa CA
 33.66°N 117.94°W (Elev. 7 ft)
Last Update:
12:36 am PST Jan 1, 2026
Forecast Valid:
7am PST Jan 1, 2026-6pm PST Jan 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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