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.

Partly Cloudy

64°F

18°C

Humidity 48%
Wind Speed SSW 4 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 13 Apr 11:35 AM PDT
Extended Forecast for

Fullerton Municipal CA

  • Today

    Today: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 52. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 73.

    High: 73 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 52. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 73. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 53. West wind 5 to 10 mph becoming light and variable in the evening.
Wednesday
Mostly sunny, with a high near 74. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 55.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 54.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton Municipal CA
 33.88°N 117.99°W (Elev. 157 ft)
Last Update:
11:27 am PDT Apr 13, 2026
Forecast Valid:
11am PDT Apr 13, 2026-6pm PDT Apr 19, 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