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

45°F

7°C

Humidity 66%
Wind Speed Calm
Barometer 29.77 in (1008.5 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 10 Mar 2:55 am CDT
Extended Forecast for

Sparta WI

  • Overnight

    Overnight: Partly cloudy, with a low around 35. Northeast wind around 6 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 51. East wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 51 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain showers before 4am, then a chance of snow showers. Mostly cloudy, with a low around 31. Northeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow showers likely before 8am, then snow showers likely between 8am and 4pm, then a slight chance of rain and snow showers after 4pm. Mostly cloudy, with a high near 42. North wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 42 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 21. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 21 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Partly sunny, with a high near 46. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    High: 46 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain before 1am, then rain and snow likely. Low around 29. South wind 7 to 11 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%.

    Low: 29 °F

    Rain then
    Rain/Snow

  • Friday

    Friday: Snow likely before 7am. Mostly sunny, with a high near 43. Northwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    High: 43 °F

    Snow Likely
    then Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 23. Northwest wind around 5 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. Northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 51. East wind 6 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
A chance of rain showers before 4am, then a chance of snow showers. Mostly cloudy, with a low around 31. Northeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday
Rain and snow showers likely before 8am, then snow showers likely between 8am and 4pm, then a slight chance of rain and snow showers after 4pm. Mostly cloudy, with a high near 42. North wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Mostly clear, with a low around 21. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Partly sunny, with a high near 46. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Thursday Night
Rain before 1am, then rain and snow likely. Low around 29. South wind 7 to 11 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%.
Friday
Snow likely before 7am. Mostly sunny, with a high near 43. Northwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 23. Northwest wind around 5 mph becoming calm in the evening.
Saturday
A chance of snow showers before 1pm, then a chance of rain and snow showers. Cloudy, with a high near 43. Southeast wind 5 to 8 mph. Chance of precipitation is 50%.
Saturday Night
Rain and snow showers likely. Cloudy, with a low around 26. East wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Sunday
Snow showers likely. Cloudy, with a high near 34. Breezy, with a north wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Sunday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 10. Northwest wind 9 to 14 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 25. Northwest wind 8 to 10 mph, with gusts as high as 18 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:
1:41 am CDT Mar 10, 2026
Forecast Valid:
3am CDT Mar 10, 2026-6pm CDT Mar 16, 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