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

0°F

-18°C

Humidity 83%
Wind Speed Calm
Barometer 30.33 in (1029.7 mb)
Dewpoint -4°F (-20°C)
Visibility 9.00 mi
Last update 3 Feb 9:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 2. Calm wind.

    Low: 2 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24. Calm wind becoming northwest around 5 mph.

    High: 24 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 12. Light and variable wind.

    Low: 12 °F

    Partly Cloudy
    then Chance
    Snow

  • Thursday

    Thursday: A 30 percent chance of snow before noon. Partly sunny, with a high near 37. South wind 5 to 7 mph becoming west in the afternoon.

    High: 37 °F

    Chance Snow
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. West wind 3 to 8 mph. Winds could gust as high as 21 mph.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 39. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 39 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 11. North wind around 6 mph becoming calm in the evening.

    Low: 11 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 30. Calm wind becoming south around 5 mph.

    High: 30 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19. Light south wind.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 2. Calm wind.
Wednesday
Mostly sunny, with a high near 24. Calm wind becoming northwest around 5 mph.
Wednesday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 12. Light and variable wind.
Thursday
A 30 percent chance of snow before noon. Partly sunny, with a high near 37. South wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Mostly cloudy, with a low around 29. West wind 3 to 8 mph. Winds could gust as high as 21 mph.
Friday
Partly sunny, with a high near 39. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 11. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 30. Calm wind becoming south around 5 mph.
Saturday Night
Mostly cloudy, with a low around 19. Light south wind.
Sunday
Mostly sunny, with a high near 34. Light east wind.
Sunday Night
Partly cloudy, with a low around 19. Calm wind.
Monday
Mostly sunny, with a high near 41. Calm wind becoming south around 5 mph.
Monday Night
Mostly cloudy, with a low around 26. Light south wind.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 41. South wind 3 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:
8:33 pm CST Feb 3, 2026
Forecast Valid:
10pm CST Feb 3, 2026-6pm CST Feb 10, 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