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

40°F

4°C

Humidity 76%
Wind Speed Calm
Barometer 29.73 in (1007.9 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 7 Jan 5:55 pm CST
Extended Forecast for

Warrens WI

  • Tonight

    Tonight: Partly cloudy, with a low around 28. South wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain, mainly after 4pm. High near 41. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Mostly Cloudy
    then Rain

  • Thursday Night

    Thursday Night: Rain before 3am, then rain and snow. Low around 31. Northeast wind 5 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain then
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow before 9am, then a chance of snow between 9am and noon. Mostly cloudy, with a high near 38. Northwest wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

    High: 38 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 23. Light north wind.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely. Mostly cloudy, with a high near 30. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 30 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. Northwest wind around 10 mph, with gusts as high as 23 mph.

    Low: 15 °F

    Chance Snow
    then Slight
    Chance Snow

  • Sunday

    Sunday: Partly sunny, with a high near 26. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 26 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14. Southwest wind around 6 mph.

    Low: 14 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. South wind around 5 mph becoming calm in the evening.
Thursday
Rain, mainly after 4pm. High near 41. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain before 3am, then rain and snow. Low around 31. Northeast wind 5 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Friday
A chance of rain and snow before 9am, then a chance of snow between 9am and noon. Mostly cloudy, with a high near 38. Northwest wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 23. Light north wind.
Saturday
Snow likely. Mostly cloudy, with a high near 30. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. Northwest wind around 10 mph, with gusts as high as 23 mph.
Sunday
Partly sunny, with a high near 26. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 14. Southwest wind around 6 mph.
Monday
Partly sunny, with a high near 36. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 25. West wind around 7 mph, with gusts as high as 18 mph.
Tuesday
A slight chance of rain and snow. Mostly cloudy, with a high near 37. West wind around 7 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Northwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 30. Northwest wind 6 to 9 mph.
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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:
5:16 pm CST Jan 7, 2026
Forecast Valid:
6pm CST Jan 7, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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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