National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

28°F

-2°C

Humidity 86%
Wind Speed NW 16 G 22 mph
Barometer 30.16 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 30 Nov 10:45 am CST
Extended Forecast for

Roscoe IL

Winter Weather Advisory until November 30, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until November 30, 12:00pm

    NOW until 12:00pm Sun

    Winter Weather Advisory

  • Today

    High: 31 °F

    Patchy
    Blowing Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 4. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 4 °F

    Mostly Cloudy

  • Monday

    Monday: Snow after noon. High near 24. Calm wind becoming south around 5 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 24 °F

    Mostly Cloudy
    then Snow

  • Monday Night

    Monday Night: Snow likely before midnight. Mostly cloudy, with a low around 11. Calm wind becoming west around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Snow Likely
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 22. West northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 22 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 30.

    High: 30 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around -2.

    Low: -2 °F

    Mostly Cloudy

Detailed Forecast

Today
Patchy blowing snow before 3pm. Mostly cloudy, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 4. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Monday
Snow after noon. High near 24. Calm wind becoming south around 5 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Monday Night
Snow likely before midnight. Mostly cloudy, with a low around 11. Calm wind becoming west around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Tuesday
Partly sunny, with a high near 22. West northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 14.
Wednesday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around -2.
Thursday
Sunny and cold, with a high near 10.
Thursday Night
Partly cloudy, with a low around -6.
Friday
Mostly cloudy, with a high near 19.
Friday Night
Mostly cloudy, with a low around 11.
Saturday
Mostly cloudy, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 88.99°W
Last Update:
9:46 am CST Nov 30, 2025
Forecast Valid:
11am CST Nov 30, 2025-6pm CST Dec 6, 2025
 
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