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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

KNOXVILLE CREEK (KNXC1)

Lat: 38.86194°NLon: 122.41722°WElev: 2200.0ft.

NA

89°F

32°C

Humidity 15%
Wind Speed WNW 7 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Heat Index85°F (29°C)
Last update 29 Jul 07:09 PM PDT
Extended Forecast for

Hidden Valley Lake CA

  • Tonight

    Tonight: Clear, with a low around 59. West wind 5 to 7 mph becoming light and variable after midnight.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 98. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 98 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58. North northwest wind around 7 mph.

    Low: 58 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Calm wind becoming south around 6 mph in the afternoon.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 61. Southwest wind 5 to 8 mph becoming calm after midnight.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 102. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 102 °F

    Hot

  • Saturday Night

    Saturday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 59. West wind 5 to 7 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 98. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Clear, with a low around 58. North northwest wind around 7 mph.
Friday
Sunny and hot, with a high near 100. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Clear, with a low around 61. Southwest wind 5 to 8 mph becoming calm after midnight.
Saturday
Sunny and hot, with a high near 102. Calm wind becoming north northwest around 6 mph in the afternoon.
Saturday Night
Clear, with a low around 62.
Sunday
Sunny and hot, with a high near 100.
Sunday Night
Clear, with a low around 64.
Monday
Sunny and hot, with a high near 101.
Monday Night
Clear, with a low around 64.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Clear, with a low around 61.
Wednesday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hidden Valley Lake CA
 38.8°N 122.51°W (Elev. 1240 ft)
Last Update:
2:10 pm PDT Jul 29, 2026
Forecast Valid:
7pm PDT Jul 29, 2026-6pm PDT Aug 5, 2026
 
Forecast Discussion
 
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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