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°C

36°F

Humidity 100%
Wind Speed N 9 km/h
Barometer 29.68 in
Dewpoint 2°C (36°F)
Visibility 16 km
Wind Chill-1°C (31°F)
Last update 11 Mar 2:35 am CDT
Extended Forecast for

Roscoe IL

  • Overnight

    Overnight: A chance of showers and thunderstorms. Cloudy, with a low around 2. North northeast wind around 20 km/h, with gusts as high as 35 km/h. Chance of precipitation is 30%.

    Low: 2 °C

    Chance
    T-storms

  • Wednesday

    Wednesday: Rain and snow before 3pm, then a chance of snow between 3pm and 4pm, then a slight chance of rain and snow after 4pm. High near 3. North wind 25 to 30 km/h, with gusts as high as 50 km/h. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 3 °C

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around -4. Northwest wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 35 km/h.

    Low: -4 °C

    Decreasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 8. West southwest wind 10 to 15 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h.

    High: 8 °C

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 2. Breezy, with a south wind 25 to 30 km/h increasing to 35 to 40 km/h after midnight. Winds could gust as high as 65 km/h. Chance of precipitation is 70%.

    Low: 2 °C

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 7. Windy.

    High: 7 °C

    Partly Sunny
    and Windy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -3.

    Low: -3 °C

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow. Cloudy, with a high near 4.

    High: 4 °C

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of snow before 1am, then rain and snow likely. Cloudy, with a low around -1.

    Low: -1 °C

    Chance Snow
    then
    Rain/Snow
    Likely

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Cloudy, with a low around 2. North northeast wind around 20 km/h, with gusts as high as 35 km/h. Chance of precipitation is 30%.
Wednesday
Rain and snow before 3pm, then a chance of snow between 3pm and 4pm, then a slight chance of rain and snow after 4pm. High near 3. North wind 25 to 30 km/h, with gusts as high as 50 km/h. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around -4. Northwest wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 35 km/h.
Thursday
Increasing clouds, with a high near 8. West southwest wind 10 to 15 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h.
Thursday Night
Showers likely. Mostly cloudy, with a low around 2. Breezy, with a south wind 25 to 30 km/h increasing to 35 to 40 km/h after midnight. Winds could gust as high as 65 km/h. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 7. Windy.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
A chance of snow. Cloudy, with a high near 4.
Saturday Night
A chance of snow before 1am, then rain and snow likely. Cloudy, with a low around -1.
Sunday
Rain and snow. Cloudy, with a high near 4. Breezy.
Sunday Night
A chance of snow. Mostly cloudy, with a low around -11. Blustery.
Monday
Partly sunny, with a high near -3. Blustery.
Monday Night
Partly cloudy, with a low around -15.
Tuesday
Mostly sunny, with a high near -2.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 89.02°W
Last Update:
2:51 am CDT Mar 11, 2026
Forecast Valid:
2am CDT Mar 11, 2026-6pm CDT Mar 17, 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