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

78°F

26°C

Humidity 28%
Wind Speed WSW 0 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 42°F (6°C)
Visibility NA
Heat Index78°F (26°C)
Last update 19 May 11:25 AM PDT
Extended Forecast for

Lake Forest CA

  • Today

    Today: Sunny, with a high near 84. West wind 5 to 10 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. West wind 5 to 10 mph becoming light and variable.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59. West wind around 5 mph becoming southeast after midnight.

    Low: 59 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

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

    High: 77 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 84. West wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 60. West wind 5 to 10 mph becoming light and variable.
Wednesday
Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59. West wind around 5 mph becoming southeast after midnight.
Thursday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Partly sunny, then gradually becoming sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 55.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Increasing clouds, with a low around 55.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 76.
Sunday Night
Increasing clouds, with a low around 55.
Memorial Day
Partly sunny, then gradually becoming sunny, with a high near 73.
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:
11:38 am PDT May 19, 2026
Forecast Valid:
11am PDT May 19, 2026-6pm PDT May 25, 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