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

Fullerton, Fullerton Municipal Airport (KFUL)

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

Clear

76°F

24°C

Humidity 53%
Wind Speed S 5 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 02 Sep 10:53 AM PDT
Extended Forecast for

Fullerton Municipal CA

  • Today

    Today: Sunny, with a high near 84. Southwest wind 5 to 10 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. West wind around 5 mph becoming east after midnight.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. East wind 5 to 10 mph becoming southwest in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. Southwest wind around 5 mph becoming southeast after midnight.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 83. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 83 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 11am. Mostly sunny, with a high near 88. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 86.

    High: 86 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 84. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 65. West wind around 5 mph becoming east after midnight.
Thursday
Sunny, with a high near 82. East wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 65. Southwest wind around 5 mph becoming southeast after midnight.
Friday
Partly sunny, then gradually becoming sunny, with a high near 83. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Friday Night
Mostly clear, with a low around 67.
Saturday
A slight chance of showers after 11am. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 70.
Sunday
Showers likely, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 86.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 70.
Labor Day
A chance of showers. Partly sunny, with a high near 86.
Monday Night
A chance of showers. Mostly cloudy, with a low around 68.
Tuesday
A chance of showers. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton Municipal CA
 33.88°N 117.99°W (Elev. 157 ft)
Last Update:
9:35 am PDT Sep 2, 2026
Forecast Valid:
11am PDT Sep 2, 2026-6pm PDT Sep 8, 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