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

Hazardous Weather Conditions

Current conditions at

FW0063 Fullerton CSU (F0063)

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

NA

77°F

25°C

Humidity 82%
Wind Speed SSW 0 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 71°F (22°C)
Visibility NA
Heat Index79°F (26°C)
Last update 27 Aug 04:53 AM PDT
Extended Forecast for

Brea CA

Extreme Heat Warning August 27, 05:14am until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 27, 05:14am until August 28, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Today

    High: 99 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog between 11pm and 2am. Otherwise, partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Patchy Fog

  • Friday

    Friday: Mostly sunny, with a high near 100. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 100 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Today
Mostly sunny, with a high near 99. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Patchy fog between 11pm and 2am. Otherwise, partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 100. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 96. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 65.
Monday
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 64.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 85.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A slight chance of showers. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brea CA
 33.93°N 117.86°W (Elev. 659 ft)
Last Update:
12:59 am PDT Aug 27, 2026
Forecast Valid:
5am PDT Aug 27, 2026-6pm PDT Sep 2, 2026
 
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Additional Resources

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