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.

Overcast

28°F

-2°C

Humidity 74%
Wind Speed SW 9 mph
Barometer 29.89 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 5 Feb 11:45 am CST
Extended Forecast for

Roscoe IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 34. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 34 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of freezing rain and sleet between midnight and 3am, then freezing rain and sleet likely, possibly mixed with snow showers. Mostly cloudy, with a low around 28. West wind 5 to 10 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. Little or no snow and sleet accumulation expected.

    Low: 28 °F

    Mostly Cloudy
    then Wintry
    Mix Likely

  • Friday

    Friday: A chance of sleet, mixing with freezing rain after 8am, then gradually ending. Mostly cloudy, with a high near 36. Breezy, with a north northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%.

    High: 36 °F

    Chance Wintry
    Mix then
    Mostly Cloudy
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 5. Wind chill values as low as -4. North wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 5 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 23. North wind around 5 mph becoming calm.

    High: 23 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Cloudy, with a low around 18.

    Low: 18 °F

    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 34. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A slight chance of freezing rain and sleet between midnight and 3am, then freezing rain and sleet likely, possibly mixed with snow showers. Mostly cloudy, with a low around 28. West wind 5 to 10 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. Little or no snow and sleet accumulation expected.
Friday
A chance of sleet, mixing with freezing rain after 8am, then gradually ending. Mostly cloudy, with a high near 36. Breezy, with a north northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 5. Wind chill values as low as -4. North wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 23. North wind around 5 mph becoming calm.
Saturday Night
Cloudy, with a low around 18.
Sunday
Mostly cloudy, with a high near 35.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 28.
Wednesday
A chance of rain. Mostly cloudy, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 88.99°W
Last Update:
11:11 am CST Feb 5, 2026
Forecast Valid:
12pm CST Feb 5, 2026-6pm CST Feb 11, 2026
 
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