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

21°F

-6°C

Humidity 63%
Wind Speed SW 9 mph
Barometer 30.24 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 8 Dec 3:45 pm CST
Extended Forecast for

2 Miles NE Poplar Grove IL

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between 10pm and 3am. Cloudy, with a temperature rising to around 24 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 15 °F⇑

    Chance Snow

  • Tuesday

    Tuesday: A slight chance of freezing rain between 4pm and 5pm, then a chance of rain or freezing rain. Cloudy, with a high near 33. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 33 °F

    Cloudy then
    Chance
    Rain/Freezing
    Rain

  • Tuesday Night

    Tuesday Night: Rain, snow, and freezing rain before 10pm, then rain between 10pm and 3am, then a chance of rain and snow after 3am. Low around 29. Breezy, with a south wind 15 to 20 mph becoming west 20 to 25 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. Little or no snow accumulation expected.

    Low: 29 °F

    Breezy.
    Wintry Mix
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Snow likely, mainly before noon. Cloudy, with a high near 30. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 30 °F

    Snow Likely
    and Breezy
    then Slight
    Chance Snow
    and Blustery

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 9. West northwest wind 5 to 15 mph.

    Low: 9 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 19.

    High: 19 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 4.

    Low: 4 °F

    Chance Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 18.

    High: 18 °F

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -4.

    Low: -4 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly between 10pm and 3am. Cloudy, with a temperature rising to around 24 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday
A slight chance of freezing rain between 4pm and 5pm, then a chance of rain or freezing rain. Cloudy, with a high near 33. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Tuesday Night
Rain, snow, and freezing rain before 10pm, then rain between 10pm and 3am, then a chance of rain and snow after 3am. Low around 29. Breezy, with a south wind 15 to 20 mph becoming west 20 to 25 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. Little or no snow accumulation expected.
Wednesday
Snow likely, mainly before noon. Cloudy, with a high near 30. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 9. West northwest wind 5 to 15 mph.
Thursday
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 19.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 4.
Friday
A chance of snow. Mostly cloudy, with a high near 18.
Friday Night
Mostly cloudy, with a low around -4.
Saturday
Partly sunny and cold, with a high near 5.
Saturday Night
Mostly cloudy, with a low around -7.
Sunday
Mostly sunny, with a high near 11.
Sunday Night
Mostly cloudy, with a low around 0.
Monday
A chance of snow. Mostly cloudy, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Poplar Grove IL
 42.4°N 88.79°W
Last Update:
3:11 pm CST Dec 8, 2025
Forecast Valid:
4pm CST Dec 8, 2025-6pm CST Dec 15, 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