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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

28°F

-2°C

Humidity 86%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 1 Dec 12:45 pm CST
Extended Forecast for

Roscoe IL

Winter Weather Advisory December 1, 02:00pm until December 2, 12:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Intermittent flurries with a slight chance of snow before 2pm, then a chance of snow with intermittent flurries between 2pm and 3pm, then snow after 3pm. High near 26. South wind around 5 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.

    High: 26 °F

    Snow

  • Tonight

    Tonight: Snow, mainly before 10pm. Low around 11. South wind around 5 mph becoming calm. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    Low: 11 °F

    Snow then
    Slight Chance
    Snow

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 21. West northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 21 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 16. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 16 °F

    Cloudy

  • Wednesday

    Wednesday: Snow showers likely. Cloudy, with a high near 31. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 31 °F

    Snow Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -5.

    Low: -5 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and cold, with a high near 10.

    High: 10 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -7.

    Low: -7 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 23.

    High: 23 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Intermittent flurries with a slight chance of snow before 2pm, then a chance of snow with intermittent flurries between 2pm and 3pm, then snow after 3pm. High near 26. South wind around 5 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow, mainly before 10pm. Low around 11. South wind around 5 mph becoming calm. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Tuesday
Mostly cloudy, with a high near 21. West northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Cloudy, with a low around 16. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Snow showers likely. Cloudy, with a high near 31. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around -5.
Thursday
Sunny and cold, with a high near 10.
Thursday Night
Partly cloudy, with a low around -7.
Friday
Partly sunny, with a high near 23.
Friday Night
Mostly cloudy, with a low around 14.
Saturday
Mostly cloudy, with a high near 27.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 10.
Sunday
Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 88.99°W
Last Update:
1:10 pm CST Dec 1, 2025
Forecast Valid:
1pm CST Dec 1, 2025-6pm CST Dec 7, 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