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

29°F

-2°C

Humidity 66%
Wind Speed Calm
Barometer 30.22 in (1025.0 mb)
Dewpoint 19°F (-7°C)
Visibility 9.00 mi
Last update 8 Feb 8:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 20. South wind 3 to 6 mph.

    Low: 20 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 38. South wind 5 to 8 mph, with gusts as high as 18 mph.

    High: 38 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Calm wind becoming northwest around 6 mph after midnight.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19. Northwest wind around 6 mph becoming calm after midnight.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36. Light northwest wind.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of snow. Mostly cloudy, with a high near 38. Light southeast wind.

    High: 38 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Chance Snow

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 20. South wind 3 to 6 mph.
Monday
Mostly cloudy, with a high near 38. South wind 5 to 8 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 28. Calm wind becoming northwest around 6 mph after midnight.
Tuesday
Mostly sunny, with a high near 39. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 19. Northwest wind around 6 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 36. Light northwest wind.
Wednesday Night
Mostly cloudy, with a low around 20. Calm wind.
Thursday
A 40 percent chance of snow. Mostly cloudy, with a high near 38. Light southeast wind.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 21. Calm wind.
Friday
A 20 percent chance of snow. Mostly sunny, with a high near 40. Calm wind becoming south around 5 mph.
Friday Night
Partly cloudy, with a low around 25. Calm wind.
Saturday
A 20 percent chance of snow. Mostly sunny, with a high near 42. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around 27. Light southwest wind.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 41. West wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
9:17 pm CST Feb 8, 2026
Forecast Valid:
9pm CST Feb 8, 2026-6pm CST Feb 15, 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