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.

Light Snow

N/A

Humidity NA
Wind Speed W 5 mph
Barometer 29.99 in
Dewpoint N/A
Visibility 4.00 mi
Last update 2 Dec 12:35 am CST
Extended Forecast for

3 Miles NNW Afton WI

  • Overnight

    Overnight: Patchy freezing fog before 2am, then patchy freezing fog after 5am. Mostly cloudy, with a low around 11. West wind around 5 mph.

    Low: 11 °F

    Patchy
    Freezing Fog

  • Tuesday

    Tuesday: Patchy freezing fog before 9am. Partly sunny, with a high near 24. West wind 5 to 10 mph becoming southwest in the afternoon.

    High: 24 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow, mainly after 4am. Mostly cloudy, with a temperature rising to around 26 by 4am. South wind 10 to 15 mph.

    Low: 20 °F⇑

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely, mainly before noon. Mostly cloudy, with a temperature rising to near 29 by 9am, then falling to around 20 during the remainder of the day. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 29 °F⇓

    Snow Likely

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -4. Northwest wind 5 to 15 mph.

    Low: -4 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 12. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -2. Southwest wind 5 to 10 mph.

    Low: -2 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Southwest wind around 10 mph.

    High: 22 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a steady temperature around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Overnight
Patchy freezing fog before 2am, then patchy freezing fog after 5am. Mostly cloudy, with a low around 11. West wind around 5 mph.
Tuesday
Patchy freezing fog before 9am. Partly sunny, with a high near 24. West wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
A 50 percent chance of snow, mainly after 4am. Mostly cloudy, with a temperature rising to around 26 by 4am. South wind 10 to 15 mph.
Wednesday
Snow likely, mainly before noon. Mostly cloudy, with a temperature rising to near 29 by 9am, then falling to around 20 during the remainder of the day. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly clear, with a low around -4. Northwest wind 5 to 15 mph.
Thursday
Sunny, with a high near 12. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around -2. Southwest wind 5 to 10 mph.
Friday
A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Southwest wind around 10 mph.
Friday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a steady temperature around 19.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 24.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 7.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 20.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 2.
Monday
Mostly cloudy, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Afton WI
 42.74°N 89.12°W (Elev. 948 ft)
Last Update:
12:26 am CST Dec 2, 2025
Forecast Valid:
1am CST Dec 2, 2025-6pm CST Dec 8, 2025
 
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