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

88°F

31°C

Humidity 23%
Wind Speed WSW 8 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Heat Index85°F (29°C)
Last update 19 Aug 07:09 PM PDT
Extended Forecast for

Hidden Valley Lake CA

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 95. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 95 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 92. Calm wind becoming south 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 55. Southwest wind 5 to 10 mph becoming light west  in the evening. Winds could gust as high as 20 mph.

    Low: 55 °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 55.

    Low: 55 °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 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 58. Calm wind.
Thursday
Increasing clouds, with a high near 95. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. 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 south southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 55. Southwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 20 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 55.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Hidden Valley Lake CA
 38.8°N 122.51°W (Elev. 1240 ft)
2:46 pm PDT Aug 19, 2026
8pm PDT Aug 19, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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