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

-2°F

-19°C

Humidity 54%
Wind Speed Calm
Barometer 30.57 in
Dewpoint -15°F (-26°C)
Visibility 10.00 mi
Last update 24 Jan 1:45 pm CST
Extended Forecast for

Roscoe IL

  • This Afternoon

    This Afternoon: Cloudy and cold, with a high near 4. Wind chill values as low as -4. Calm wind becoming east northeast around 5 mph.

    High: 4 °F

    Cold

  • Tonight

    Tonight: A 20 percent chance of snow. Cloudy, with a low around 1. Wind chill values as low as -12. North wind 5 to 10 mph.

    Low: 1 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy and cold, with a high near 10. Wind chill values as low as -15. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 10 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -5. Wind chill values as low as -21. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: -5 °F

    Mostly Clear

  • Monday

    Monday: Sunny and cold, with a high near 10. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 10 °F

    Cold

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around -2.

    Low: -2 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 12.

    High: 12 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Cloudy and cold, with a high near 4. Wind chill values as low as -4. Calm wind becoming east northeast around 5 mph.
Tonight
A 20 percent chance of snow. Cloudy, with a low around 1. Wind chill values as low as -12. North wind 5 to 10 mph.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy and cold, with a high near 10. Wind chill values as low as -15. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around -5. Wind chill values as low as -21. Northwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny and cold, with a high near 10. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 2.
Tuesday
Partly sunny, with a high near 15.
Tuesday Night
Partly cloudy, with a low around -2.
Wednesday
Partly sunny, with a high near 12.
Wednesday Night
Partly cloudy, with a low around -2.
Thursday
Mostly sunny, with a high near 12.
Thursday Night
Mostly clear, with a low around -1.
Friday
Mostly sunny, with a high near 15.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.41°N 89.02°W
Last Update:
1:31 pm CST Jan 24, 2026
Forecast Valid:
1pm CST Jan 24, 2026-6pm CST Jan 30, 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