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.

Fair

61°F

16°C

Humidity 72%
Wind Speed S 13 mph
Barometer 29.77 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 14 Nov 6:45 pm CST
Extended Forecast for

Roscoe IL

  • Tonight

    Tonight: Increasing clouds, with a low around 54. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 67. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 67 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 48. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. West northwest wind 5 to 10 mph becoming light northwest after midnight.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Tuesday

    Tuesday: A chance of rain before noon. Partly sunny, with a high near 44.

    High: 44 °F

    Chance Rain
    then Partly
    Sunny

  • Tuesday Night

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

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 54. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 67. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 31. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 48. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 25. West northwest wind 5 to 10 mph becoming light northwest after midnight.
Monday
Mostly sunny, with a high near 46.
Monday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Tuesday
A chance of rain before noon. Partly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Thursday
Rain likely. Mostly cloudy, with a high near 50.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35.
Friday
A chance of rain. Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 89.02°W
Last Update:
6:26 pm CST Nov 14, 2025
Forecast Valid:
7pm CST Nov 14, 2025-6pm CST Nov 21, 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