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

FW0063 Fullerton CSU (F0063)

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

NA

67°F

19°C

Humidity 46%
Wind Speed N 3 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 18 Oct 07:53 AM PDT
Extended Forecast for

Brea CA

  • Today

    Today: Sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 63. West wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 83. East wind 5 to 10 mph becoming southwest in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Southeast wind around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 11pm. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 67.

    High: 67 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 63. West wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 83. East wind 5 to 10 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 61. Southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 78. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
A slight chance of showers after 11pm. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59. Chance of precipitation is 20%.
Wednesday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 40%.
Wednesday Night
Showers. Mostly cloudy, with a low around 57.
Thursday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 67.
Thursday Night
A chance of showers before 11pm. Partly cloudy, with a low around 54.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brea CA
 33.94°N 117.89°W (Elev. 787 ft)
Last Update:
12:45 am PDT Oct 18, 2026
Forecast Valid:
8am PDT Oct 18, 2026-6pm PDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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