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

68°F

20°C

Humidity 42%
Wind Speed SW 3 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 45°F (7°C)
Visibility 9.00 mi
Last update 17 Jun 10:30 PM PDT
Extended Forecast for

Fullerton Municipal CA

Heat Advisory June 17, 10:48pm until June 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 17, 10:48pm until June 18, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 64. South wind 5 to 10 mph.

    Low: 64 °F

    Patchy Fog

  • Juneteenth

    Juneteenth: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 82. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Increasing
    Clouds

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 62.

    Low: 62 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 87. Light south wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 64. South wind 5 to 10 mph.
Juneteenth
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 82. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80.
Friday Night
Increasing clouds, with a low around 62.
Saturday
Partly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Increasing clouds, with a low around 61.
Monday
Mostly sunny, with a high near 79.
Monday Night
Increasing clouds, with a low around 61.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 79.
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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:
1:57 pm PDT Jun 17, 2025
Forecast Valid:
10pm PDT Jun 17, 2025-6pm PDT Jun 24, 2025
 
Forecast Discussion
 
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