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

85°F

29°C

Humidity 23%
Wind Speed SE 0 MPH
Barometer 29.84 in (1010.5 mb)
Dewpoint 43°F (6°C)
Visibility NA
Heat Index82°F (28°C)
Last update 18 Oct 01:25 PM PDT
Extended Forecast for

Lake Forest CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 86. Southwest wind 5 to 10 mph.

    High: 86 °F

    Sunny

  • Tonight

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

    Low: 63 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. Southwest wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly after 11am. Partly sunny, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 59.

    Low: 59 °F

    Showers

  • Thursday

    Thursday: Showers, mainly before 11am. Mostly cloudy, with a high near 70.

    High: 70 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 86. Southwest wind 5 to 10 mph.
Tonight
Clear, with a low around 63. West wind around 5 mph becoming calm.
Monday
Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 62. Southwest wind around 5 mph becoming calm.
Tuesday
Patchy fog before 11am. Otherwise, sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of rain, mainly after 11am. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Wednesday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 59.
Thursday
Showers, mainly before 11am. Mostly cloudy, with a high near 70.
Thursday Night
A slight chance of showers before 11pm. Partly cloudy, with a low around 56.
Friday
Sunny, with a high near 72.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest CA
 33.65°N 117.69°W (Elev. 449 ft)
Last Update:
1:11 pm PDT Oct 18, 2026
Forecast Valid:
1pm PDT Oct 18, 2026-6pm PDT Oct 24, 2026
 
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