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.

Mostly Cloudy

57°F

14°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 28 Mar 05:05 AM PDT
Extended Forecast for

Fullerton Municipal CA

  • Today

    Today: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 86. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 86 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 58. West wind around 5 mph becoming calm after midnight.

    Low: 58 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 78. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 78 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 76.

    High: 76 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 74.

    High: 74 °F

    Slight Chance
    Showers then
    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 86. Light west wind increasing to 5 to 10 mph in the afternoon.
Tonight
Partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunday Night
Increasing clouds, with a low around 58. West wind around 5 mph becoming calm after midnight.
Monday
Mostly cloudy, with a high near 78. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Mostly cloudy, with a high near 76.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
A slight chance of showers before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Sunny, with a high near 78.
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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:
12:49 am PDT Mar 28, 2026
Forecast Valid:
5am PDT Mar 28, 2026-6pm PDT Apr 3, 2026
 
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Additional Resources

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Chance of Precipitation