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

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Last update 10 Jan 3:10 am CST
Extended Forecast for

Roscoe IL

  • Overnight

    Overnight: Rain and snow. Steady temperature around 35. South southwest wind around 5 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow

  • Saturday

    Saturday: Snow, possibly mixed with rain before noon, then scattered snow after 4pm. High near 34. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 34 °F

    Rain/Snow
    then
    Scattered
    Snow Showers

  • Saturday Night

    Saturday Night: Scattered snow showers, mainly before 11pm, then a chance of flurries with a slight chance of snow showers after midnight. Mostly cloudy, with a low around 21. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Scattered
    Snow Showers
    and Blustery

  • Sunday

    Sunday: A chance of flurries before 9am. Mostly sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 31 °F

    Chance
    Flurries

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24. Southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain and snow. Steady temperature around 35. South southwest wind around 5 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Snow, possibly mixed with rain before noon, then scattered snow after 4pm. High near 34. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Scattered snow showers, mainly before 11pm, then a chance of flurries with a slight chance of snow showers after midnight. Mostly cloudy, with a low around 21. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Sunday
A chance of flurries before 9am. Mostly sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 24. Southwest wind around 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 41.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A chance of snow showers before noon. Mostly cloudy, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Partly sunny, with a high near 29.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 24.
Friday
A chance of snow showers. Mostly cloudy, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 89.02°W
Last Update:
2:31 am CST Jan 10, 2026
Forecast Valid:
3am CST Jan 10, 2026-6pm CST Jan 16, 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