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.

Clear

73°F

23°C

Humidity 73%
Wind Speed N 0 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 31 Aug 01:30 AM PDT
Extended Forecast for

Fullerton Municipal CA

Heat Advisory September 1, 10:00am until September 2, 06:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 93. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. West wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 94. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 68. Calm wind.
Sunday
Sunny, with a high near 93. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 70. West wind around 5 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 94. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny, with a high near 88.
Thursday Night
Increasing clouds, with a low around 68.
Friday
Partly sunny, then gradually becoming sunny, with a high near 88.
Friday Night
Increasing clouds, with a low around 68.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fullerton Municipal CA
 33.86°N 117.99°W (Elev. 69 ft)
Last Update:
7:47 pm PDT Aug 30, 2025
Forecast Valid:
1am PDT Aug 31, 2025-6pm PDT Sep 6, 2025
 
Forecast Discussion
 
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Additional Resources

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