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.

A Few Clouds

15°F

-9°C

Humidity 62%
Wind Speed NW 8 mph
Barometer 29.68 in (1006.9 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 25 Feb 7:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Sunny, with a high near 24. South wind 5 to 13 mph becoming northwest in the morning.

    High: 24 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of snow after 4am. Partly cloudy, with a low around 8. Calm wind.

    Low: 8 °F

    Mostly Clear
    then Slight
    Chance Snow

  • Thursday

    Thursday: A 20 percent chance of snow before 7am. Partly sunny, with a high near 38. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 38 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 24. Southwest wind around 5 mph becoming calm.

    Low: 24 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 47. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 18. Northwest wind around 7 mph, with gusts as high as 20 mph.

    Low: 18 °F

    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 26. Northwest wind around 6 mph.

    High: 26 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 6. North wind 3 to 5 mph.

    Low: 6 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 25. East wind 3 to 5 mph.

    High: 25 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Today
Sunny, with a high near 24. South wind 5 to 13 mph becoming northwest in the morning.
Tonight
A 20 percent chance of snow after 4am. Partly cloudy, with a low around 8. Calm wind.
Thursday
A 20 percent chance of snow before 7am. Partly sunny, with a high near 38. Light south wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 24. Southwest wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 47. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 18. Northwest wind around 7 mph, with gusts as high as 20 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 26. Northwest wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 6. North wind 3 to 5 mph.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 25. East wind 3 to 5 mph.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 11. Light east wind.
Monday
Mostly sunny, with a high near 34. Southeast wind 3 to 6 mph.
Monday Night
A 20 percent chance of snow. Partly cloudy, with a low around 17. South wind around 5 mph.
Tuesday
A 30 percent chance of snow. Mostly sunny, with a high near 40. Southwest wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
8:27 am CST Feb 25, 2026
Forecast Valid:
8am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation