Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Current conditions at

READER RANCH (RRRC1)

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

NA

43°F

6°C

Humidity 49%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 28 Dec 11:13 PM PST
Extended Forecast for

3 Miles NNW Penn Valley CA

Frost Advisory December 29, 01:00am until December 29, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Overnight

    Overnight: Mostly clear, with a steady temperature around 38. East northeast wind around 5 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Areas of frost before 7am.  Otherwise, sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Areas of frost after 5am.  Otherwise, mostly clear, with a low around 37. Light east wind.

    Low: 37 °F

    Mostly Clear
    then Areas
    Frost

  • Tuesday

    Tuesday: Areas of frost before 8am.  Otherwise, sunny, with a high near 53. Light and variable wind.

    High: 53 °F

    Areas Frost
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly after 4pm.  Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 10pm.  Mostly cloudy, with a low around 43. Chance of precipitation is 60%.

    Low: 43 °F

    Rain Likely

  • New Year's Day

    New Year's Day: Rain likely.  Cloudy, with a high near 50.

    High: 50 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain.  Cloudy, with a low around 46.

    Low: 46 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 38. East northeast wind around 5 mph.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 54. Light and variable wind.
Monday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 37. Light east wind.
Tuesday
Areas of frost before 8am. Otherwise, sunny, with a high near 53. Light and variable wind.
Tuesday Night
Mostly cloudy, with a low around 40. Calm wind.
Wednesday
A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 53.
Wednesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
New Year's Day
Rain likely. Cloudy, with a high near 50.
Thursday Night
Rain. Cloudy, with a low around 46.
Friday
Rain likely. Cloudy, with a high near 52.
Friday Night
Rain likely. Cloudy, with a low around 45.
Saturday
Rain likely. Cloudy, with a high near 49.
Saturday Night
Rain likely. Cloudy, with a low around 44.
Sunday
Rain likely. Mostly cloudy, with a high near 49.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Penn Valley CA
 39.23°N 121.22°W (Elev. 1401 ft)
11:36 pm PST Dec 28, 2025
12am PST Dec 29, 2025-6pm PST Jan 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database