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.

Partly Cloudy

63°F

17°C

Humidity 60%
Wind Speed S 10 mph
Barometer 30.28 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 3 Oct 11:45 am CDT
Extended Forecast for

Roscoe IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. South wind around 10 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 2am and 3am. Partly cloudy, with a low around 46. South southeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 46 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 68. West southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 40 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 65. Calm wind becoming north northwest around 5 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 67. South wind around 10 mph.
Tonight
A slight chance of showers between 2am and 3am. Partly cloudy, with a low around 46. South southeast wind around 5 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 68. West southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
Clear, with a low around 40. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Monday
Sunny, with a high near 65. Calm wind becoming north northwest around 5 mph.
Monday Night
Clear, with a low around 40.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 88.99°W
Last Update:
9:51 am CDT Oct 3, 2026
Forecast Valid:
12pm CDT Oct 3, 2026-6pm CDT Oct 9, 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