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

15°F

-9°C

Humidity 37%
Wind Speed SW 3 mph
Barometer 30.29 in (1028.1 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Last update 4 Dec 12:55 pm CST
Extended Forecast for

3 Miles W Tunnel City WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 15. Wind chill values as low as zero. South wind 5 to 8 mph, with gusts as high as 22 mph.

    High: 15 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a temperature falling to near 8 by 8pm, then rising to around 14 during the remainder of the night. Wind chill values as low as -6. Southwest wind 7 to 10 mph, with gusts as high as 24 mph.

    Low: 8 °F⇑

    Mostly Cloudy

  • Friday

    Friday: Snow likely, mainly between 11am and 2pm. Mostly cloudy, with a high near 28. Southwest wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 28 °F

    Chance Snow
    then Snow
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 10. Northwest wind around 6 mph.

    Low: 10 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 20. Northwest wind around 5 mph becoming calm in the morning.

    High: 20 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 6. Calm wind. New snow accumulation of around an inch possible.

    Low: 6 °F

    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 17. Calm wind becoming north around 6 mph.

    High: 17 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -9. Calm wind.

    Low: -9 °F

    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 21. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 21 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 15. Wind chill values as low as zero. South wind 5 to 8 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a temperature falling to near 8 by 8pm, then rising to around 14 during the remainder of the night. Wind chill values as low as -6. Southwest wind 7 to 10 mph, with gusts as high as 24 mph.
Friday
Snow likely, mainly between 11am and 2pm. Mostly cloudy, with a high near 28. Southwest wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 10. Northwest wind around 6 mph.
Saturday
Partly sunny, with a high near 20. Northwest wind around 5 mph becoming calm in the morning.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 6. Calm wind. New snow accumulation of around an inch possible.
Sunday
Mostly sunny, with a high near 17. Calm wind becoming north around 6 mph.
Sunday Night
Partly cloudy, with a low around -9. Calm wind.
Monday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 21. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Snow. Low around 11. South wind around 6 mph becoming west after midnight. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 28. West wind 3 to 7 mph.
Tuesday Night
Snow. Low around 14. Light and variable wind becoming northeast 5 to 7 mph in the evening. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of snow. Mostly cloudy, with a high near 26. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Tunnel City WI
 44.01°N 90.63°W
Last Update:
1:31 pm CST Dec 4, 2025
Forecast Valid:
1pm CST Dec 4, 2025-6pm CST Dec 10, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation