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 52%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 31 Dec 06:20 AM PST
Extended Forecast for

Costa Mesa CA

Flood Watch December 31, 10:00pm until January 1, 10:00pm
Click here for hazard details and duration
Flood Watch

  • Today

    Today: Showers, mainly after 10am. High near 67. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 10pm. Some of the storms could produce heavy rainfall. Low around 57. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Heavy Rain

  • New Year's Day

    New Year's Day: Showers and possibly a thunderstorm before 10am, then showers likely. Some of the storms could produce heavy rainfall. High near 65. Southwest wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 65 °F

    Heavy Rain
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Mostly cloudy, with a high near 65. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 10pm. Cloudy, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 4pm. Cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely, mainly after 10pm. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 63.

    High: 63 °F

    Showers
    Likely

Detailed Forecast

Today
Showers, mainly after 10am. High near 67. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers, with thunderstorms also possible after 10pm. Some of the storms could produce heavy rainfall. Low around 57. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
New Year's Day
Showers and possibly a thunderstorm before 10am, then showers likely. Some of the storms could produce heavy rainfall. High near 65. Southwest wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly cloudy, with a high near 65. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly after 10pm. Cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday
Showers likely, mainly before 4pm. Cloudy, with a high near 63. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 53.
Sunday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 63.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 51.
Monday
A chance of showers. Mostly cloudy, with a high near 63.
Monday Night
A chance of showers. Cloudy, with a low around 51.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63.
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:
12:07 am PST Dec 31, 2025
Forecast Valid:
6am PST Dec 31, 2025-6pm PST Jan 6, 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