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

2 Miles SW Cataract WI

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 34. South wind 3 to 5 mph.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain, mainly after 4pm. High near 42. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 42 °F

    Mostly Cloudy
    then Rain

  • Thursday Night

    Thursday Night: Rain before midnight, then rain, possibly mixed with snow between midnight and 3am, then rain after 3am. 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%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain then
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow before 9am, then a slight 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 20%.

    High: 38 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 24. Light northwest wind.

    Low: 24 °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 2 inches possible.

    High: 30 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 16. Northwest wind around 11 mph, with gusts as high as 23 mph.

    Low: 16 °F

    Chance Snow

  • Sunday

    Sunday: Partly sunny, with a high near 26. Northwest wind 5 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 15. Southwest wind around 6 mph.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 34. South wind 3 to 5 mph.
Thursday
Rain, mainly after 4pm. High near 42. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain before midnight, then rain, possibly mixed with snow between midnight and 3am, then rain after 3am. 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%. Little or no snow accumulation expected.
Friday
A slight chance of rain and snow before 9am, then a slight 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 20%.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 24. Light northwest 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 2 inches possible.
Saturday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 16. Northwest wind around 11 mph, with gusts as high as 23 mph.
Sunday
Partly sunny, with a high near 26. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 15. Southwest wind around 6 mph.
Monday
Partly sunny, with a high near 36. West wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 26. West wind around 6 mph.
Tuesday
A slight chance of rain and snow. Mostly cloudy, with a high near 37. West wind around 6 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 24. West wind around 6 mph becoming northwest after midnight. Chance of precipitation is 30%.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 31. Northwest wind 6 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Cataract WI
 44.06°N 90.87°W
Last Update:
5:16 pm CST Jan 7, 2026
Forecast Valid:
7pm CST Jan 7, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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