Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

KNOXVILLE CREEK (KNXC1)

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

NA

66°F

19°C

Humidity 47%
Wind Speed N 3 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 20 Aug 01:09 AM PDT
Extended Forecast for

3 Miles WSW Hidden Valley Lake CA

  • Overnight

    Overnight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 95. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 95 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 92. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 92 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. Southwest wind 5 to 10 mph becoming light west  in the evening. Winds could gust as high as 21 mph.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 56. Calm wind.
Thursday
Increasing clouds, with a high near 95. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 58. Southwest wind around 6 mph becoming calm in the evening.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 92. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 53. Southwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 21 mph.
Saturday
Sunny, with a high near 91. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 54.
Monday
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Hidden Valley Lake CA
 38.79°N 122.56°W (Elev. 958 ft)
2:46 pm PDT Aug 19, 2026
1am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database