National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fullerton, Fullerton Municipal Airport (KFUL)

Lat: 33.87194°NLon: 117.98472°WElev: 95.0ft.

rain,mist

59°F

15°C

Humidity 96%
Wind Speed N 3 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 58°F (14°C)
Visibility 3.00 mi
Last update 24 Dec 02:38 PM PST
Extended Forecast for

Fullerton Municipal CA

Flood Watch December 24, 02:50pm until December 24, 10:00pm
Wind Advisory December 24, 02:50pm until December 24, 10:00pm
Flood Advisory until December 24, 03:51pm
Click here for hazard details and duration
Flood Watch
Wind Advisory
Flood Advisory
  •  
    Flood Watch December 24, 02:50pm until December 24, 10:00pm
    Wind Advisory December 24, 02:50pm until December 24, 10:00pm
    Flood Advisory until December 24, 03:51pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 65 °F

    Heavy Rain

  • Tonight

    Tonight: Rain before 10pm, then a chance of showers after 10pm. Low around 58. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Rain then
    Chance
    Showers

  • Christmas Day

    Christmas Day: A chance of showers, with thunderstorms also possible after 10am. Cloudy, with a high near 64. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly after 10pm. Low around 58. South wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers

  • Friday

    Friday: Showers. High near 61. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F

    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.

    Low: 49 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 10am. Mostly sunny, with a high near 61. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 65. Northwest wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain before 10pm, then a chance of showers after 10pm. Low around 58. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Christmas Day
A chance of showers, with thunderstorms also possible after 10am. Cloudy, with a high near 64. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers, mainly after 10pm. Low around 58. South wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers. High near 61. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Saturday
A slight chance of showers before 10am. Mostly sunny, with a high near 61. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 45.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton Municipal CA
 33.86°N 117.99°W (Elev. 69 ft)
Last Update:
12:42 pm PST Dec 24, 2025
Forecast Valid:
2pm PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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