National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

18°F

-8°C

Humidity 53%
Wind Speed N 15 mph
Barometer 30.24 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 7 Dec 1:45 pm CST
Extended Forecast for

3 Miles NNW Afton WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 21. Wind chill values between zero and 5. North wind around 10 mph.

    High: 21 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 0. Wind chill values between -5 and -10. North wind around 5 mph becoming calm in the evening.

    Low: 0 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 22. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 22 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of snow, mainly before 3am. Mostly cloudy, with a temperature falling to near 16 by 8pm, then rising to around 25 during the remainder of the night. South wind 10 to 15 mph.

    Low: 16 °F⇑

    Chance Snow

  • Tuesday

    Tuesday: A chance of rain after noon, mixing with snow after 3pm. Mostly cloudy, with a high near 35. West wind 10 to 15 mph. Chance of precipitation is 30%.

    High: 35 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain, possibly mixed with snow. Low around 28. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: A chance of rain and snow before noon. Mostly cloudy, with a temperature falling to around 26 by 5pm. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 34 °F⇓

    Chance
    Rain/Snow and
    Breezy then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 12. Northwest wind 5 to 10 mph.

    Low: 12 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23.

    High: 23 °F

    Chance Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 21. Wind chill values between zero and 5. North wind around 10 mph.
Tonight
Increasing clouds, with a low around 0. Wind chill values between -5 and -10. North wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy, with a high near 22. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
A 40 percent chance of snow, mainly before 3am. Mostly cloudy, with a temperature falling to near 16 by 8pm, then rising to around 25 during the remainder of the night. South wind 10 to 15 mph.
Tuesday
A chance of rain after noon, mixing with snow after 3pm. Mostly cloudy, with a high near 35. West wind 10 to 15 mph. Chance of precipitation is 30%.
Tuesday Night
Rain, possibly mixed with snow. Low around 28. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday
A chance of rain and snow before noon. Mostly cloudy, with a temperature falling to around 26 by 5pm. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 12. Northwest wind 5 to 10 mph.
Thursday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 3.
Friday
Partly sunny, with a high near 14.
Friday Night
Mostly cloudy, with a low around -4.
Saturday
Partly sunny and cold, with a high near 9.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Afton WI
 42.74°N 89.12°W (Elev. 948 ft)
Last Update:
2:37 pm CST Dec 7, 2025
Forecast Valid:
2pm CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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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