Hazardous Weather Conditions
Current conditions at
FW0063 Fullerton CSU (F0063)
Lat: 33.8805°NLon: 117.88417°WElev: 243.01ft.NA
99°F
37°C
| Humidity | 23% |
| Wind Speed | S 0 MPH |
| Barometer | 29.89 in (1012.19 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | NA |
| Heat Index | 97°F (36°C) |
| Last update | 04 Oct 05:33 PM PDT |
Extended Forecast for
Brea CA
Extreme Heat Warning October 4, 05:53pm until October 8, 08:00pm
NOW until 8:00pm Thu
Extreme Heat Warning
Tonight
Low: 74 °F
Clear
Monday
High: 100 °F
Sunny
Monday Night
Low: 73 °F
Mostly Clear
Tuesday
High: 98 °F
Sunny
Tuesday Night
Low: 75 °F
Clear
Wednesday
High: 97 °F
Sunny
Wednesday Night
Low: 71 °F
Clear
Thursday
High: 95 °F
Sunny
Detailed Forecast
Tonight
Clear, with a low around 74. Southwest wind around 5 mph becoming calm.
Monday
Sunny, with a high near 100. East wind 5 to 10 mph becoming light and variable.
Monday Night
Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 98. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Clear, with a low around 75. Calm wind.
Wednesday
Sunny, with a high near 97.
Wednesday Night
Clear, with a low around 71.
Thursday
Sunny, with a high near 95.
Thursday Night
Clear, with a low around 69.
Friday
Sunny, with a high near 90.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Brea CA
33.93°N 117.86°W (Elev. 659 ft)
33.93°N 117.86°W (Elev. 659 ft)
12:40 pm PDT Oct 4, 2026
5pm PDT Oct 4, 2026-6pm PDT Oct 11, 2026
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