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: 247.0ft.

NA

78°F

26°C

Humidity 61%
Wind Speed NW 9 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 63°F (17°C)
Visibility NA
Heat Index80°F (27°C)
Last update 18 Jun 11:53 AM PDT
Extended Forecast for

Brea CA

Heat Advisory June 18, 12:07pm until June 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 18, 12:07pm until June 18, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 62. South wind 5 to 10 mph.

    Low: 62 °F

    Mostly Clear
    then Patchy
    Fog

  • Juneteenth

    Juneteenth: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 84. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 62. Southwest wind 5 to 10 mph becoming light south after midnight.

    Low: 62 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Southwest wind 5 to 10 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 61.

    Low: 61 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 77.

    High: 77 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59.

    Low: 59 °F

    Patchy Fog

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Southwest wind 5 to 10 mph.
Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 62. South wind 5 to 10 mph.
Juneteenth
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 84. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 62. Southwest wind 5 to 10 mph becoming light south after midnight.
Friday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Southwest wind 5 to 10 mph.
Friday Night
Increasing clouds, with a low around 61.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 77.
Saturday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59.
Sunday
Patchy fog before 11am. Otherwise, sunny, with a high near 79.
Sunday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 60.
Monday
Patchy fog. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 59.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brea CA
 33.92°N 117.89°W (Elev. 361 ft)
Last Update:
8:07 am PDT Jun 18, 2025
Forecast Valid:
12pm PDT Jun 18, 2025-6pm PDT Jun 24, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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