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

-9°F

-23°C

Humidity 44%
Wind Speed W 8 mph
Barometer 30.73 in
Dewpoint -26°F (-32°C)
Visibility 10.00 mi
Wind Chill-25°F (-32°C)
Last update 23 Jan 4:45 pm CST
Extended Forecast for

Rockton IL

Cold Weather Advisory January 23, 05:21pm until January 24, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 23, 05:21pm until January 24, 09:00am

    NOW until 9:00am Sat

    Cold Weather Advisory

  • Tonight

    Low: -14 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy and cold, with a high near 3. Wind chill values as low as -23. North wind around 5 mph becoming calm.

    High: 3 °F

    Cold

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly after midnight. Cloudy, with a low around -1. Wind chill values as low as -12. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: -1 °F

    Chance Snow

  • Sunday

    Sunday: A 40 percent chance of snow, mainly before noon. Mostly cloudy and cold, with a high near 10. Wind chill values as low as -12. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 10 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -4. Northwest wind around 10 mph, with gusts as high as 15 mph.

    Low: -4 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 7.

    High: 7 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around -14. Wind chill values as low as -27. Northwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly cloudy and cold, with a high near 3. Wind chill values as low as -23. North wind around 5 mph becoming calm.
Saturday Night
A 30 percent chance of snow, mainly after midnight. Cloudy, with a low around -1. Wind chill values as low as -12. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.
Sunday
A 40 percent chance of snow, mainly before noon. Mostly cloudy and cold, with a high near 10. Wind chill values as low as -12. North wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around -4. Northwest wind around 10 mph, with gusts as high as 15 mph.
Monday
Sunny and cold, with a high near 7.
Monday Night
Partly cloudy, with a low around 1.
Tuesday
Partly sunny, with a high near 15.
Tuesday Night
Partly cloudy, with a low around -2.
Wednesday
Partly sunny, with a high near 11.
Wednesday Night
Partly cloudy, with a low around -2.
Thursday
Mostly sunny, with a high near 11.
Thursday Night
Partly cloudy, with a low around -1.
Friday
Mostly sunny, with a high near 16.
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:
5:11 pm CST Jan 23, 2026
Forecast Valid:
5pm CST Jan 23, 2026-6pm CST Jan 30, 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