National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

FW0063 Fullerton CSU (F0063)

Lat: 33.8805°NLon: 117.88417°WElev: 243.01ft.

NA

72°F

22°C

Humidity 72%
Wind Speed WNW 8 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 62°F (17°C)
Visibility NA
Last update 12 Nov 04:08 PM PST
Extended Forecast for

Fullerton CA

  • Tonight

    Tonight: Showers likely, mainly after 4am. Increasing clouds, with a low around 59. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 71 °F

    Showers
    Likely then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers, mainly between 10pm and 4am. Low around 57. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: A chance of showers before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 71. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. East wind around 5 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers after 10pm. Mostly cloudy, with a low around 55. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 4am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers likely, mainly after 4am. Increasing clouds, with a low around 59. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly between 10pm and 4am. Low around 57. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of showers before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 71. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly clear, with a low around 53. East wind around 5 mph.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
A slight chance of showers after 10pm. Mostly cloudy, with a low around 55. Chance of precipitation is 20%.
Monday
A chance of showers. Mostly cloudy, with a high near 70.
Monday Night
Showers likely, mainly before 4am. Mostly cloudy, with a low around 52.
Tuesday
A chance of showers before 10am. Mostly sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 70.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 51.
Thursday
A chance of showers. Partly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.87°N 117.93°W (Elev. 184 ft)
Last Update:
12:28 pm PST Nov 12, 2026
Forecast Valid:
4pm PST Nov 12, 2026-6pm PST Nov 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation