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

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

7°F

-14°C

Humidity 74%
Wind Speed Calm
Barometer 30.22 in (1025.4 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 7 Dec 7:55 am CST
Extended Forecast for

4 Miles NNW Tunnel City WI

  • Today

    Today: Increasing clouds, with a high near 14. Wind chill values as low as -8. North wind 3 to 6 mph.

    High: 14 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around -2. Calm wind.

    Low: -2 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 21. Wind chill values as low as -2. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 21 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 14. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 14 °F

    Snow Likely
    then Chance
    Snow

  • Tuesday

    Tuesday: A chance of rain and snow after noon. Cloudy, with a high near 34. West wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Snow before 9pm, then rain and snow between 9pm and 3am, then snow likely after 3am. Low around 21. South wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 21 °F

    Rain/Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before noon. Mostly cloudy, with a high near 28. Northwest wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 28 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 5. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 5 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 20. Northwest wind around 7 mph.

    High: 20 °F

    Chance Snow

Detailed Forecast

Today
Increasing clouds, with a high near 14. Wind chill values as low as -8. North wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around -2. Calm wind.
Monday
Mostly cloudy, with a high near 21. Wind chill values as low as -2. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 14. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday
A chance of rain and snow after noon. Cloudy, with a high near 34. West wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow before 9pm, then rain and snow between 9pm and 3am, then snow likely after 3am. Low around 21. South wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 28. Northwest wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 5. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Thursday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 20. Northwest wind around 7 mph.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around -3. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Friday
Mostly cloudy, with a high near 10. Northwest wind 10 to 13 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around -9. Northwest wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday
Partly sunny, with a high near 6. West wind 7 to 9 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Tunnel City WI
 44.05°N 90.6°W
Last Update:
6:01 am CST Dec 7, 2025
Forecast Valid:
8am CST Dec 7, 2025-6pm CST Dec 13, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation