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

54°F

12°C

Humidity 88%
Wind Speed E 3 mph
Barometer 30.34 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 1 Nov 8:45 am CST
Extended Forecast for

Roscoe IL

  • Today

    Today: Isolated showers. Mostly cloudy, with a high near 65. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.

    High: 65 °F

    Isolated
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 7pm. Mostly cloudy, with a low around 50. South southeast wind 5 to 10 mph.

    Low: 50 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 66. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers. Cloudy, with a low around 56. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Rain likely before noon, then rain and possibly a thunderstorm between noon and 3pm, then rain after 3pm. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    High: 71 °F

    Breezy. Rain
    Likely then
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Rain then
    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A chance of rain before midnight. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday

    Thursday: A chance of rain after noon. Mostly cloudy, with a high near 62.

    High: 62 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Isolated showers. Mostly cloudy, with a high near 65. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers before 7pm. Mostly cloudy, with a low around 50. South southeast wind 5 to 10 mph.
Monday
A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 66. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 50 percent chance of showers. Cloudy, with a low around 56. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Rain likely before noon, then rain and possibly a thunderstorm between noon and 3pm, then rain after 3pm. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Tuesday Night
Rain. Low around 52. Chance of precipitation is 90%.
Wednesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Wednesday Night
A chance of rain before midnight. Mostly cloudy, with a low around 47.
Thursday
A chance of rain after noon. Mostly cloudy, with a high near 62.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
A chance of rain. Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.41°N 89.02°W
Last Update:
8:17 am CST Nov 1, 2026
Forecast Valid:
8am CST Nov 1, 2026-6pm CST Nov 7, 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