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.

Overcast

21°F

-6°C

Humidity 68%
Wind Speed NW 18 G 26 mph
Barometer 30.06 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 11 Jan 12:50 am CST
Extended Forecast for

Rockton IL

  • Overnight

    Overnight: Snow showers likely, mainly before 2am. Cloudy, with a low around 22. Blustery, with a west northwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 22 °F

    Snow Showers
    Likely and
    Blustery

  • Sunday

    Sunday: A chance of flurries before 9am. Partly sunny, with a high near 30. Blustery, with a northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 30 °F

    Chance
    Flurries and
    Blustery then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 47.

    High: 47 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 30. Blustery.

    High: 30 °F

    Mostly Cloudy
    and Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow showers likely, mainly before 2am. Cloudy, with a low around 22. Blustery, with a west northwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Sunday
A chance of flurries before 9am. Partly sunny, with a high near 30. Blustery, with a northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Sunday Night
Partly cloudy, with a low around 25. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind around 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 31. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 47.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 25.
Wednesday
Mostly cloudy, with a high near 30. Blustery.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
Partly sunny, with a high near 29.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 24.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
Friday Night
A chance of snow. Mostly cloudy, with a low around 16.
Saturday
Mostly cloudy, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.05°W
Last Update:
12:46 am CST Jan 11, 2026
Forecast Valid:
1am CST Jan 11, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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