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.

Fair

-6°F

-21°C

Humidity 100%
Wind Speed NW 5 mph
Barometer 30.41 in
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-18°F (-28°C)
Last update 4 Dec 7:45 am CST
Extended Forecast for

Rockton IL

  • Today

    Today: Sunny, with a high near 12. Wind chill values as low as -9. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 12 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a temperature falling to near -1 by 8pm, then rising to around 7 during the remainder of the night. Wind chill values as low as -14. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: -1 °F⇑

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 27. Wind chill values as low as -5. South southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 27 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 18. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26. West northwest wind around 5 mph, with gusts as high as 10 mph.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 18.

    High: 18 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 0.

    Low: 0 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 20.

    High: 20 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 12. Wind chill values as low as -9. Calm wind becoming south southwest around 5 mph in the afternoon.
Tonight
Partly cloudy, with a temperature falling to near -1 by 8pm, then rising to around 7 during the remainder of the night. Wind chill values as low as -14. South wind 5 to 10 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 27. Wind chill values as low as -5. South southwest wind around 10 mph, with gusts as high as 15 mph.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 18. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.
Saturday
Partly sunny, with a high near 26. West northwest wind around 5 mph, with gusts as high as 10 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 8.
Sunday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 18.
Sunday Night
Mostly cloudy, with a low around 0.
Monday
Mostly cloudy, with a high near 20.
Monday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 12.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 17.
Wednesday
A chance of snow. Mostly cloudy, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.05°W
Last Update:
6:11 am CST Dec 4, 2025
Forecast Valid:
8am CST Dec 4, 2025-6pm CST Dec 10, 2025
 
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