Hazardous Weather Conditions

Current conditions at

FW0063 Fullerton CSU (F0063)

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

NA

84°F

29°C

Humidity 63%
Wind Speed WNW 7 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 70°F (21°C)
Visibility NA
Heat Index88°F (31°C)
Last update 22 Jul 02:23 PM PDT
Extended Forecast for

Fullerton CA

Heat Advisory July 22, 02:45pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 22, 02:45pm until July 27, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. Southwest wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 95. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. West wind around 5 mph becoming calm  in the evening.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 89. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 69. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 95. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 71. West wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 93. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 69.
Monday
Mostly sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Mostly sunny, with a high near 89.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Fullerton CA
 33.87°N 117.93°W (Elev. 184 ft)
12:07 pm PDT Jul 22, 2026
2pm PDT Jul 22, 2026-6pm PDT Jul 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database