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

69°F

21°C

Humidity 90%
Wind Speed N 0 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 09 Oct 04:53 AM PDT
Extended Forecast for

Fullerton Municipal CA

  • Today

    Today: Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 68. West wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 81 °F

    Cloudy

  • Saturday Night

    Saturday Night: A chance of showers after 11pm. Mostly cloudy, with a low around 67. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 76. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 76 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Columbus Day

    Columbus Day: Showers likely, mainly before 11am. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Increasing clouds, with a low around 68. West wind around 5 mph becoming calm in the evening.
Saturday
Cloudy, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A chance of showers after 11pm. Mostly cloudy, with a low around 67. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A chance of showers. Mostly cloudy, with a high near 76. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Columbus Day
Showers likely, mainly before 11am. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Monday Night
A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 56.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton Municipal CA
 33.86°N 117.99°W (Elev. 69 ft)
Last Update:
12:22 am PDT Oct 9, 2026
Forecast Valid:
5am PDT Oct 9, 2026-6pm PDT Oct 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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