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

84°F

29°C

Humidity 26%
Wind Speed E 11 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 46°F (8°C)
Visibility NA
Heat Index82°F (28°C)
Last update 17 Oct 05:53 AM PDT
Extended Forecast for

Brea CA

Heat Advisory October 17, 06:09am until October 17, 08:00pm
Wind Advisory October 17, 06:09am until October 17, 12:00pm
Click here for hazard details and duration
Heat Advisory
Wind Advisory
  •  
    Heat Advisory October 17, 06:09am until October 17, 08:00pm
    Wind Advisory October 17, 06:09am until October 17, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. East wind around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. East wind 5 to 10 mph becoming light and variable.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 11am. Otherwise, sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 62.

    Low: 62 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 11pm. Partly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 92. East wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 67. East wind around 5 mph.
Sunday
Sunny, with a high near 89. East wind 5 to 10 mph becoming light and variable.
Sunday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Monday
Patchy fog before 11am. Otherwise, sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 62.
Tuesday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74.
Tuesday Night
A chance of showers after 11pm. Partly cloudy, with a low around 58.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 70.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56.
Thursday
A chance of showers. Partly sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brea CA
 33.9°N 117.86°W (Elev. 351 ft)
Last Update:
5:40 am PDT Oct 17, 2026
Forecast Valid:
6am PDT Oct 17, 2026-6pm PDT Oct 23, 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