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Hazardous Weather Conditions

Current conditions at

FW0063 Fullerton CSU (F0063)

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

NA

34°C

93°F

Humidity 44%
Wind Speed WSW 5 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 20°C (68°F)
Visibility NA
Heat Index36°C (97°F)
Last update 10 Sep 04:08 PM PDT
Extended Forecast for

Fullerton CA

Extreme Heat Warning September 10, 04:24pm until September 10, 08:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning September 10, 04:24pm until September 10, 08:00pm

    NOW until 8:00pm Thu

    Extreme Heat Warning

  • Tonight

    Low: 22 °C

    Clear

  • Friday

    Friday: Sunny, with a high near 33. Southwest wind 5 to 15 km/h.

    High: 33 °C

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21. South wind 5 to 10 km/h.

    Low: 21 °C

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 31. South wind 10 to 15 km/h.

    High: 31 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. Southwest wind 10 to 15 km/h.

    Low: 19 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 29.

    High: 29 °C

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 19.

    Low: 19 °C

    Clear

  • Monday

    Monday: Sunny, with a high near 29.

    High: 29 °C

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 22. South wind 5 to 10 km/h.
Friday
Sunny, with a high near 33. Southwest wind 5 to 15 km/h.
Friday Night
Partly cloudy, with a low around 21. South wind 5 to 10 km/h.
Saturday
Sunny, with a high near 31. South wind 10 to 15 km/h.
Saturday Night
Mostly clear, with a low around 19. Southwest wind 10 to 15 km/h.
Sunday
Sunny, with a high near 29.
Sunday Night
Clear, with a low around 19.
Monday
Sunny, with a high near 29.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 28.
Tuesday Night
Mostly clear, with a low around 17.
Wednesday
Sunny, with a high near 29.
Wednesday Night
Mostly clear, with a low around 18.
Thursday
Sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.87°N 117.93°W (Elev. 184 m)
Last Update:
11:17 am PDT Sep 10, 2026
Forecast Valid:
4pm PDT Sep 10, 2026-6pm PDT Sep 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation