National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

31°F

-1°C

Humidity 52%
Wind Speed W 14 G 20 mph
Barometer 29.92 in (1014.5 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 10 Jan 12:55 pm CST
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: Snow likely, mainly after 4pm. Mostly cloudy, with a high near 30. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 30 °F

    Snow Likely

  • Tonight

    Tonight: A chance of snow or flurries before 11pm, then a chance of flurries between 11pm and midnight. Mostly cloudy, with a low around 17. Northwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 29. Northwest wind 5 to 8 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 29 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. Southwest wind 3 to 6 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 40. West wind 3 to 6 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 29. Calm wind becoming southwest around 6 mph after midnight.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 44. West wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 44 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 21. Northwest wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 21 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. North wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 30. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A chance of snow or flurries before 11pm, then a chance of flurries between 11pm and midnight. Mostly cloudy, with a low around 17. Northwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Sunday
Partly sunny, with a high near 29. Northwest wind 5 to 8 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 22. Southwest wind 3 to 6 mph.
Monday
Sunny, with a high near 40. West wind 3 to 6 mph.
Monday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 29. Calm wind becoming southwest around 6 mph after midnight.
Tuesday
A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 44. West wind 6 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 21. Northwest wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 27. North wind 7 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 13. North wind around 6 mph becoming calm in the evening.
Thursday
A 40 percent chance of snow. Partly sunny, with a high near 30. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 23. South wind around 6 mph becoming west after midnight.
Friday
A 50 percent chance of snow. Mostly cloudy, with a high near 31. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 11. Northwest wind 6 to 8 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy, with a high near 19. Northwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.95°N 90.84°W
Last Update:
3:36 pm CST Jan 10, 2026
Forecast Valid:
3pm CST Jan 10, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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