Severe Thunderstorms in the Central Plains; Heavy Rainfall in the Mississippi and Tennessee Valleys; Critical Fire Weather in the Southwest

Scattered severe storms capable of large to very large hail, severe wind gusts, and a few tornadoes will be possible across the central Plains. Heavy rain will pose a flash flood threat across portions of the Mississippi Valley into the Tennessee and Ohio Valleys. Hot, dry and windy conditions will continue to bring a critical fire weather threat from the Southwest into the Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Light Rain

72°F

22°C

Humidity 94%
Wind Speed E 8 mph
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 8 Jun 9:45 am CDT
Extended Forecast for

Roscoe IL

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm.  Steady temperature around 78. Southeast wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Chance
    T-storms then
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then a chance of showers.  Low around 69. Southeast wind around 5 mph becoming south southwest after midnight. Winds could gust as high as 10 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers

  • Tuesday

    Tuesday: A 10 percent chance of showers before 7am.  Partly sunny, with a high near 86. West wind 5 to 10 mph.

    High: 86 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 71. Calm wind becoming south southeast around 5 mph after midnight. Winds could gust as high as 15 mph.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 89. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am.  Mostly cloudy, with a low around 70. Breezy.  Chance of precipitation is 70%.

    Low: 70 °F

    T-storms
    Likely and
    Breezy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm.  Mostly sunny, with a high near 84. Chance of precipitation is 70%.

    High: 84 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Steady temperature around 78. Southeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 69. Southeast wind around 5 mph becoming south southwest after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 10 percent chance of showers before 7am. Partly sunny, with a high near 86. West wind 5 to 10 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. Calm wind becoming south southeast around 5 mph after midnight. Winds could gust as high as 15 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. Breezy. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.
Friday
Sunny, with a high near 85.
Friday Night
A chance of showers. Mostly clear, with a low around 61.
Saturday
A chance of showers. Mostly sunny, with a high near 84.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.41°N 89.02°W
5:51 am CDT Jun 8, 2026
10am CDT Jun 8, 2026-6pm CDT Jun 14, 2026
 
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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