Hot in Parts of the West; Cold Blast Coming to the Central U.S.

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S. A blast of cold air will drop across the central and eastern U.S. later this week bringing below to well below normal temperatures. Read More >

Current conditions at

READER RANCH (RRRC1)

Lat: 39.30351°NLon: 121.11725°WElev: 1968.0ft.

NA

91°F

33°C

Humidity 15%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Heat Index87°F (31°C)
Last update 31 Aug 07:13 PM PDT
Extended Forecast for

Penn Valley CA

Heat Advisory September 1, 12:00pm until September 1, 11:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Clear, with a low around 70. Light and variable wind.

    Low: 70 °F

    Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 96. Calm wind becoming west around 6 mph in the afternoon.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Light and variable wind becoming southwest around 6 mph in the morning.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. South southwest wind around 6 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 70. Light and variable wind.
Labor Day
Sunny and hot, with a high near 96. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 71. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 93. Light and variable wind becoming southwest around 6 mph in the morning.
Tuesday Night
Mostly clear, with a low around 68. South southwest wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 83.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Penn Valley CA
 39.19°N 121.18°W (Elev. 1670 ft)
5:21 pm PDT Aug 31, 2025
7pm PDT Aug 31, 2025-6pm PDT Sep 7, 2025
 
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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