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

14°F

-10°C

Humidity 66%
Wind Speed NW 6 G 20 mph
Barometer 30.42 in (1032.2 mb)
Dewpoint 4°F (-16°C)
Visibility 9.00 mi
Wind Chill5°F (-15°C)
Last update 22 Feb 9:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: A chance of flurries before 3pm. Cloudy, with a high near 19. Wind chill values as low as -2. Blustery, with a north wind 14 to 17 mph, with gusts as high as 25 mph.

    High: 19 °F

    Chance
    Flurries and
    Blustery

  • Tonight

    Tonight: Partly cloudy, with a low around 6. Wind chill values as low as -6. North wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 6 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 25. Wind chill values as low as -1. Light and variable wind.

    High: 25 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Calm wind becoming south around 6 mph after midnight.

    Low: 10 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly after noon. Partly sunny, with a high near 35. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. West wind around 7 mph.

    Low: 14 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 30. Northwest wind 3 to 6 mph.

    High: 30 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow, mainly before noon. Mostly sunny, with a high near 34. Calm wind becoming west around 5 mph.

    High: 34 °F

    Chance Snow

Detailed Forecast

Today
A chance of flurries before 3pm. Cloudy, with a high near 19. Wind chill values as low as -2. Blustery, with a north wind 14 to 17 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 6. Wind chill values as low as -6. North wind 8 to 11 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 25. Wind chill values as low as -1. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 10. Calm wind becoming south around 6 mph after midnight.
Tuesday
Snow likely, mainly after noon. Partly sunny, with a high near 35. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Tuesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. West wind around 7 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 30. Northwest wind 3 to 6 mph.
Wednesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 11. Calm wind.
Thursday
A 30 percent chance of snow, mainly before noon. Mostly sunny, with a high near 34. Calm wind becoming west around 5 mph.
Thursday Night
Mostly clear, with a low around 19. Light southwest wind.
Friday
Mostly sunny, with a high near 47. Southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 22. Southwest wind around 6 mph becoming northwest after midnight.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 35. Northwest wind 6 to 10 mph, with gusts as high as 20 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:
8:21 am CST Feb 22, 2026
Forecast Valid:
10am CST Feb 22, 2026-6pm CST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation