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.

Light Unknown Precip

16°F

-9°C

Humidity 73%
Wind Speed NW 5 mph
Barometer 30.50 in (1035.0 mb)
Dewpoint 8°F (-13°C)
Visibility 6.00 mi
Wind Chill8°F (-13°C)
Last update 22 Feb 6:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 5. Wind chill values as low as -3. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 5 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24. Wind chill values as low as -6. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11. Calm wind becoming south around 6 mph after midnight.

    Low: 11 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly before noon. Mostly cloudy, with a high near 37. South wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 11. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 11 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 26 °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 20 percent chance of snow before noon. Partly sunny, with a high near 34. Calm wind becoming west around 5 mph.

    High: 34 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19. Light southwest wind.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 5. Wind chill values as low as -3. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 24. Wind chill values as low as -6. Northwest wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 11. Calm wind becoming south around 6 mph after midnight.
Tuesday
Snow likely, mainly before noon. Mostly cloudy, with a high near 37. South wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
Mostly cloudy, with a low around 11. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. Northwest wind around 6 mph becoming calm in the afternoon.
Wednesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 11. Calm wind.
Thursday
A 20 percent chance of snow before noon. Partly 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.
Friday Night
Partly cloudy, with a low around 20. 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.
Saturday Night
Mostly clear, with a low around 8. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
A 20 percent chance of snow. Mostly sunny, with a high near 29. Calm wind becoming north around 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:
7:26 pm CST Feb 22, 2026
Forecast Valid:
7pm CST Feb 22, 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