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Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Hazardous Weather Conditions

Current conditions at

KNOXVILLE CREEK (KNXC1)

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

NA

90°F

32°C

Humidity 16%
Wind Speed ENE 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index86°F (30°C)
Last update 03 Oct 11:09 AM PDT
Extended Forecast for

Hidden Valley Lake CA

Heat Advisory until October 3, 11:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until October 3, 11:00pm

    NOW until 11:00pm Sat

    Heat Advisory

  • Today

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 63. Light and variable wind becoming north northwest around 6 mph in the evening.

    Low: 63 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 97. Light and variable wind.

    High: 97 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 62. Southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 62 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

Detailed Forecast

Today
Sunny, with a high near 98. Light south wind.
Tonight
Increasing clouds, with a low around 63. Light and variable wind becoming north northwest around 6 mph in the evening.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 97. Light and variable wind.
Sunday Night
Mostly clear, with a low around 61. Calm wind.
Monday
Sunny and hot, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Clear, with a low around 62. Southwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Clear, with a low around 63.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 90.
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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:
10:05 am PDT Oct 3, 2026
Forecast Valid:
11am PDT Oct 3, 2026-6pm PDT Oct 9, 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