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

57°F

14°C

Humidity 77%
Wind Speed SE 7 mph
Barometer 29.96 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 12 Oct 9:30 pm CDT
Extended Forecast for

Roscoe IL

  • Tonight

    Tonight: A chance of sprinkles between 2am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 55. South southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Columbus Day

    Columbus Day: A slight chance of showers before 11am, then a chance of sprinkles between 11am and noon. Mostly cloudy, with a high near 72. South southeast wind around 5 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 49. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: 49 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66. North northeast wind 5 to 10 mph.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 49. Northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 49 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of sprinkles between 2am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 55. South southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Columbus Day
A slight chance of showers before 11am, then a chance of sprinkles between 11am and noon. Mostly cloudy, with a high near 72. South southeast wind around 5 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 49. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.
Tuesday
Partly sunny, with a high near 66. North northeast wind 5 to 10 mph.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 49. Northeast wind around 5 mph, with gusts as high as 10 mph.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Partly sunny, with a high near 75.
Friday Night
A chance of showers. Mostly cloudy, with a low around 54.
Saturday
A chance of showers. Partly sunny, with a high near 71.
Saturday Night
A chance of showers. Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 88.99°W
Last Update:
9:01 pm CDT Oct 12, 2025
Forecast Valid:
9pm CDT Oct 12, 2025-6pm CDT Oct 19, 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