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

80°F

27°C

Humidity 31%
Wind Speed SSW 0 MPH
Barometer 29.72 in (1006.44 mb)
Dewpoint 47°F (8°C)
Visibility NA
Heat Index79°F (26°C)
Last update 19 Oct 04:55 PM PDT
Extended Forecast for

Lake Forest CA

  • Tonight

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

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, then becoming partly sunny during the afternoon, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 60. Southeast wind around 5 mph.

    Low: 60 °F

    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers, mainly after 11am. Mostly cloudy, with a high near 75. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 75 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 59. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 11am, then showers likely. High near 69. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 11pm. Partly cloudy, with a low around 56. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 62. Southwest wind around 5 mph becoming calm.
Tuesday
Sunny, then becoming partly sunny during the afternoon, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Tuesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 60. Southeast wind around 5 mph.
Wednesday
A chance of showers, mainly after 11am. Mostly cloudy, with a high near 75. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 59. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm before 11am, then showers likely. High near 69. Chance of precipitation is 80%.
Thursday Night
A slight chance of showers before 11pm. Partly cloudy, with a low around 56. Chance of precipitation is 20%.
Friday
Sunny, with a high near 72.
Friday Night
Clear, with a low around 57.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 80.
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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:
12:08 pm PDT Oct 19, 2026
Forecast Valid:
5pm PDT Oct 19, 2026-6pm PDT Oct 26, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation