National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

19°F

-7°C

Humidity 73%
Wind Speed N 9 mph
Barometer 30.47 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 31 Jan 11:45 am CST
Extended Forecast for

3 Miles N Poplar Grove IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 21. North wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 21 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 4. North wind around 5 mph becoming calm in the evening.

    Low: 4 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a high near 24. Wind chill values as low as -3. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 24 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 15 °F

    Chance Snow
    then Slight
    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 26 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 6.

    Low: 6 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 21. North wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Mostly clear, with a low around 4. North wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 24. Wind chill values as low as -3. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Partly sunny, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 12.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Partly cloudy, with a low around 6.
Wednesday
Mostly sunny, with a high near 23.
Wednesday Night
Partly cloudy, with a low around 7.
Thursday
Partly sunny, with a high near 28.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23.
Friday
Mostly cloudy, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Poplar Grove IL
 42.4°N 88.82°W
Last Update:
11:46 am CST Jan 31, 2026
Forecast Valid:
12pm CST Jan 31, 2026-6pm CST Feb 6, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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