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

CW5283 Foothill Ranch (C5283)

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

NA

63°F

17°C

Humidity 81%
Wind Speed SE 0 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 57°F (14°C)
Visibility NA
Last update 04 Sep 01:40 AM PDT
Extended Forecast for

Lake Forest CA

  • Overnight

    Overnight: Partly cloudy, with a low around 62. East wind around 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 11pm. Partly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 62. East wind around 5 mph.
Friday
Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 87. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Saturday Night
A slight chance of showers after 11pm. Partly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 69.
Labor Day
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest CA
 33.65°N 117.69°W (Elev. 449 ft)
Last Update:
1:01 am PDT Sep 4, 2026
Forecast Valid:
1am PDT Sep 4, 2026-6pm PDT Sep 10, 2026
 
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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