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

Hazardous Weather Conditions

Current conditions at

CW5283 Foothill Ranch (C5283)

Lat: 33.685°NLon: 117.65583°WElev: 986.91ft.

NA

81°F

27°C

Humidity 28%
Wind Speed ENE 0 MPH
Barometer 29.72 in (1006.44 mb)
Dewpoint 45°F (7°C)
Visibility NA
Heat Index80°F (27°C)
Last update 03 Oct 06:10 AM PDT
Extended Forecast for

Lake Forest CA

Wind Advisory until October 3, 06:00pm
Extreme Heat Warning October 3, 06:29am until October 8, 08:00pm
Click here for hazard details and duration
Wind Advisory
Extreme Heat Warning
  •  
    Wind Advisory until October 3, 06:00pm
    Extreme Heat Warning October 3, 06:29am until October 8, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 102 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 77. Calm wind becoming northeast around 5 mph after midnight.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 101. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 101 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. Calm wind becoming east around 5 mph after midnight.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 102. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 102 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98.

    High: 98 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 102. East wind 5 to 10 mph becoming light and variable in the afternoon.
Tonight
Mostly clear, with a low around 77. Calm wind becoming northeast around 5 mph after midnight.
Sunday
Sunny, with a high near 101. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 77. Calm wind becoming east around 5 mph after midnight.
Monday
Sunny, with a high near 102. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 98.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 97.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny, with a high near 97.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest CA
 33.65°N 117.67°W (Elev. 722 ft)
Last Update:
12:59 am PDT Oct 3, 2026
Forecast Valid:
6am PDT Oct 3, 2026-6pm PDT Oct 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation