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

22°F

-6°C

Humidity 52%
Wind Speed W 3 mph
Barometer 30.49 in (1034.4 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 23 Feb 12:55 pm CST
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 24. Calm wind.

    High: 24 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Calm wind becoming south 5 to 7 mph after midnight. Winds could gust as high as 18 mph.

    Low: 12 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of snow, mainly before 2pm. Partly sunny, with a high near 37. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 23 mph. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 10. Northwest wind 7 to 10 mph, with gusts as high as 24 mph.

    Low: 10 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 25. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 25 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly after midnight. Partly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 35. Calm wind becoming southwest around 5 mph.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 21. Calm wind becoming south around 5 mph after midnight.

    Low: 21 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 48. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 24. Calm wind.
Tonight
Mostly cloudy, with a low around 12. Calm wind becoming south 5 to 7 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
A 40 percent chance of snow, mainly before 2pm. Partly sunny, with a high near 37. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 23 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
Mostly cloudy, with a low around 10. Northwest wind 7 to 10 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 25. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Wednesday Night
A 30 percent chance of snow, mainly after midnight. Partly cloudy, with a low around 11. Calm wind.
Thursday
Mostly sunny, with a high near 35. Calm wind becoming southwest around 5 mph.
Thursday Night
Mostly clear, with a low around 21. Calm wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 48. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 20. West wind around 6 mph.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 33. North wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 8. North wind 3 to 6 mph.
Sunday
A 30 percent chance of snow. Mostly sunny, with a high near 27. Northeast wind 3 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
12:26 pm CST Feb 23, 2026
Forecast Valid:
1pm CST Feb 23, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation