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

23°F

-5°C

Humidity 77%
Wind Speed Calm
Barometer 29.82 in (1011.5 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 2 Dec 6:55 pm CST
Extended Forecast for

Warrens WI

  • Tonight

    Tonight: A 50 percent chance of snow, mainly between 10pm and 5am. Cloudy, with a steady temperature around 23. South wind around 8 mph becoming west after midnight. Winds could gust as high as 22 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 23 °F

    Slight Chance
    Snow then
    Chance Snow

  • Wednesday

    Wednesday: A slight chance of snow before 8am, then a chance of flurries between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 13 by 5pm. Wind chill values as low as -1. Northwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 23 °F⇓

    Slight Chance
    Snow then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -7. Wind chill values as low as -15. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: -7 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 13. Wind chill values as low as -6. Calm wind becoming south 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 13 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 3. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 3 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 26. Southwest wind around 7 mph.

    High: 26 °F

    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 8. West wind 3 to 5 mph.

    Low: 8 °F

    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Northwest wind 3 to 5 mph.

    High: 22 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 2. Light and variable wind.

    Low: 2 °F

    Chance Snow

Detailed Forecast

Tonight
A 50 percent chance of snow, mainly between 10pm and 5am. Cloudy, with a steady temperature around 23. South wind around 8 mph becoming west after midnight. Winds could gust as high as 22 mph. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
A slight chance of snow before 8am, then a chance of flurries between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 13 by 5pm. Wind chill values as low as -1. Northwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around -7. Wind chill values as low as -15. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 13. Wind chill values as low as -6. Calm wind becoming south 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 3. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Friday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 26. Southwest wind around 7 mph.
Friday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 8. West wind 3 to 5 mph.
Saturday
A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Northwest wind 3 to 5 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 2. Light and variable wind.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 19. Northeast wind 3 to 6 mph.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 0. Calm wind.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 22. Calm wind becoming south around 6 mph in the morning.
Monday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 10. Light and variable wind becoming southwest around 5 mph after midnight.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 28. West wind 5 to 7 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Warrens WI
 44.14°N 90.51°W
Last Update:
3:16 pm CST Dec 2, 2025
Forecast Valid:
7pm CST Dec 2, 2025-6pm CST Dec 9, 2025
 
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Additional Resources

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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