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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast and Breezy

23°F

-5°C

Humidity 80%
Wind Speed W 21 G 25 mph
Barometer 29.97 in
Dewpoint 18°F (-8°C)
Visibility 7.00 mi
Wind Chill8°F (-13°C)
Last update 21 Jan 11:15 pm CST
Extended Forecast for

Rockton IL

Extreme Cold Watch January 23, 03:00am until January 23, 12:00pm
Click here for hazard details and duration
Extreme Cold Watch

  • Tonight

    Tonight: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 11. Wind chill values as low as -2. West wind 10 to 15 mph, with gusts as high as 35 mph.

    Low: 11 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: A 20 percent chance of snow after 3pm. Partly sunny, with a high near 18. Wind chill values as low as -4. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 18 °F

    Mostly Sunny
    then Slight
    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -13. Wind chill values as low as -36. Northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: -13 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -6. Wind chill values as low as -37. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -13. North wind around 5 mph, with gusts as high as 10 mph.

    Low: -13 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3.

    High: 3 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around -3.

    Low: -3 °F

    Chance Snow

  • Sunday

    Sunday: A chance of snow before noon. Mostly cloudy, with a high near 12.

    High: 12 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -5.

    Low: -5 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 11. Wind chill values as low as -2. West wind 10 to 15 mph, with gusts as high as 35 mph.
Thursday
A 20 percent chance of snow after 3pm. Partly sunny, with a high near 18. Wind chill values as low as -4. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around -13. Wind chill values as low as -36. Northwest wind around 15 mph, with gusts as high as 30 mph.
Friday
Sunny and cold, with a high near -6. Wind chill values as low as -37. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around -13. North wind around 5 mph, with gusts as high as 10 mph.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around -3.
Sunday
A chance of snow before noon. Mostly cloudy, with a high near 12.
Sunday Night
Mostly cloudy, with a low around -5.
Monday
Mostly sunny and cold, with a high near 8.
Monday Night
Partly cloudy, with a low around -1.
Tuesday
Mostly sunny, with a high near 18.
Tuesday Night
Mostly cloudy, with a low around 3.
Wednesday
Partly sunny, with a high near 15.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.05°W
Last Update:
9:41 pm CST Jan 21, 2026
Forecast Valid:
11pm CST Jan 21, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation