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.

Light Unknown Precip

20°F

-7°C

Humidity 80%
Wind Speed NW 7 mph
Barometer 30.08 in (1020.2 mb)
Dewpoint 15°F (-9°C)
Visibility 2.00 mi
Wind Chill11°F (-12°C)
Last update 10 Jan 10:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Snow showers likely before 4am, then isolated flurries between 4am and 5am. Cloudy, with a steady temperature around 20. Northwest wind 8 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 20 °F

    Snow Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 29. Northwest wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 29 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23. Southwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 23 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 41. Calm wind becoming west around 5 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 30. Calm wind becoming southwest around 6 mph after midnight.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 45. West wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 45 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 22. Northwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 22 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 28. North wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 28 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13. North wind around 6 mph becoming calm in the evening.

    Low: 13 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow showers likely before 4am, then isolated flurries between 4am and 5am. Cloudy, with a steady temperature around 20. Northwest wind 8 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Sunday
Partly sunny, with a high near 29. Northwest wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 23. Southwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 23 mph.
Monday
Sunny, with a high near 41. Calm wind becoming west around 5 mph.
Monday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 30. Calm wind becoming southwest around 6 mph after midnight.
Tuesday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 45. West wind 6 to 11 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 22. Northwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 28. North wind 7 to 9 mph, with gusts as high as 20 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, mainly after noon. Partly sunny, with a high near 31. Calm wind becoming south 5 to 7 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 12. Northwest wind around 7 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy, with a high near 20. Northwest wind 6 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
11:11 pm CST Jan 10, 2026
Forecast Valid:
11pm CST Jan 10, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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