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.

Mostly Cloudy

21°F

-6°C

Humidity 63%
Wind Speed SW 10 mph
Barometer 30.29 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 8 Dec 12:45 pm CST
Extended Forecast for

4 Miles S Fort Atkinson WI

  • This Afternoon

    This Afternoon: A chance of flurries before 3pm. Mostly cloudy, with a high near 23. South wind 5 to 10 mph.

    High: 23 °F

    Chance
    Flurries

  • Tonight

    Tonight: Snow likely before 4am, then a chance of snow and freezing rain. Cloudy, with a temperature falling to near 17 by 8pm, then rising to around 25 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    Low: 17 °F⇑

    Slight Chance
    Snow then
    Wintry Mix
    Likely

  • Tuesday

    Tuesday: A slight chance of snow and freezing rain before 7am, then a chance of rain after 3pm. Cloudy, with a high near 35. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 35 °F

    Slight Chance
    Wintry Mix
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain and snow before midnight, then rain between midnight and 3am, then rain and snow after 3am. Low around 30. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain/Snow

  • Wednesday

    Wednesday: Snow likely, mainly 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 60%. New snow accumulation of less than one inch possible.

    High: 33 °F⇓

    Snow Likely
    and Breezy
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 4. Northwest wind 5 to 10 mph.

    Low: 4 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Partly sunny, with a high near 19. West wind around 5 mph.

    High: 19 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 4. West wind 5 to 10 mph.

    Low: 4 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 15.

    High: 15 °F

    Chance Snow

Detailed Forecast

This Afternoon
A chance of flurries before 3pm. Mostly cloudy, with a high near 23. South wind 5 to 10 mph.
Tonight
Snow likely before 4am, then a chance of snow and freezing rain. Cloudy, with a temperature falling to near 17 by 8pm, then rising to around 25 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Tuesday
A slight chance of snow and freezing rain before 7am, then a chance of rain after 3pm. Cloudy, with a high near 35. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday Night
Rain and snow before midnight, then rain between midnight and 3am, then rain and snow after 3am. Low around 30. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely, mainly 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 60%. New snow accumulation of less than one inch possible.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 4. Northwest wind 5 to 10 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 19. West wind around 5 mph.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 4. West wind 5 to 10 mph.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 15.
Friday Night
Mostly cloudy, with a low around -7.
Saturday
Partly sunny and cold, with a high near 5.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -7.
Sunday
Mostly sunny, with a high near 13.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Fort Atkinson WI
 42.86°N 88.85°W (Elev. 899 ft)
Last Update:
12:16 pm CST Dec 8, 2025
Forecast Valid:
12pm CST Dec 8, 2025-6pm CST Dec 14, 2025
 
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