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.

Overcast

18°F

-8°C

Humidity 87%
Wind Speed Calm
Barometer 30.00 in (1017.8 mb)
Dewpoint 15°F (-9°C)
Visibility 9.00 mi
Last update 1 Dec 11:55 pm CST
Extended Forecast for

3 Miles W Tunnel City WI

  • Overnight

    Overnight: Cloudy, with a low around 9. Calm wind.

    Low: 9 °F

    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 25. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 25 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow after midnight. Cloudy, with a temperature rising to around 23 by 3am. Southwest wind around 6 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.

    Low: 20 °F⇑

    Cloudy then
    Chance Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a high near 26. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 26 °F

    Chance Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -7. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.

    Low: -7 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 13. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 13 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 1. South wind around 7 mph, with gusts as high as 18 mph.

    Low: 1 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 26. Southwest wind around 7 mph.

    High: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 11. Southwest wind around 5 mph becoming light and variable after midnight.

    Low: 11 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 9. Calm wind.
Tuesday
Partly sunny, with a high near 25. Calm wind becoming southwest 5 to 8 mph in the morning.
Tuesday Night
A 40 percent chance of snow after midnight. Cloudy, with a temperature rising to around 23 by 3am. Southwest wind around 6 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.
Wednesday
A 30 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a high near 26. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around -7. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 13. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 1. South wind around 7 mph, with gusts as high as 18 mph.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 26. Southwest wind around 7 mph.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 11. Southwest wind around 5 mph becoming light and variable after midnight.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 25. Northwest wind 3 to 5 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 3. Light north wind.
Sunday
Partly sunny, with a high near 18. North wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around -2. Light and variable wind.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 23. Calm wind becoming south around 5 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Tunnel City WI
 44.01°N 90.63°W
Last Update:
11:31 pm CST Dec 1, 2025
Forecast Valid:
12am CST Dec 2, 2025-6pm CST Dec 8, 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