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

67°F

19°C

Humidity 93%
Wind Speed N 1 MPH
Barometer 29.53 in (1000.0 mb)
Dewpoint 65°F (18°C)
Visibility NA
Last update 11 Oct 05:08 AM PDT
Extended Forecast for

Fullerton CA

  • Overnight

    Overnight: Showers. Low around 66. West wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 66 °F

    Showers

  • Sunday

    Sunday: Showers, mainly before 11am. High near 72. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Showers
    Likely

  • Columbus Day

    Columbus Day: Showers likely, mainly before 11am. Mostly cloudy, with a high near 67. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of showers. Mostly cloudy, with a low around 58. West wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

Detailed Forecast

Overnight
Showers. Low around 66. West wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly before 11am. High near 72. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day
Showers likely, mainly before 11am. Mostly cloudy, with a high near 67. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 58. West wind around 5 mph becoming calm. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Clear, with a low around 56.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Clear, with a low around 60.
Thursday
Sunny, with a high near 87.
Thursday Night
Clear, with a low around 65.
Friday
Sunny, with a high near 93.
Friday Night
Clear, with a low around 68.
Saturday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.87°N 117.93°W (Elev. 184 ft)
Last Update:
4:20 am PDT Oct 11, 2026
Forecast Valid:
5am PDT Oct 11, 2026-6pm PDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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