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

71°F

22°C

Humidity 83%
Wind Speed SSW 4 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 66°F (19°C)
Visibility NA
Last update 23 Jul 12:53 AM PDT
Extended Forecast for

Brea CA

Heat Advisory July 23, 01:11am until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 23, 01:11am until July 27, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Overnight

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 96 °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 95. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70. Southwest wind around 5 mph becoming calm after midnight.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, sunny, with a high near 96.

    High: 96 °F

    Patchy Fog
    then Sunny

  • Saturday Night

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

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, sunny, with a high near 96.

    High: 96 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 69. Calm wind.
Thursday
Sunny, with a high near 96. Light and variable wind becoming west 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 95. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 70. Southwest wind around 5 mph becoming calm after midnight.
Saturday
Patchy fog before 11am. Otherwise, sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Patchy fog before 11am. Otherwise, sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 68.
Monday
Mostly sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brea CA
 33.92°N 117.89°W (Elev. 361 ft)
Last Update:
12:34 am PDT Jul 23, 2026
Forecast Valid:
1am PDT Jul 23, 2026-6pm PDT Jul 29, 2026
 
Forecast Discussion
 
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Additional Resources

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