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.

Overcast

27°F

-3°C

Humidity 85%
Wind Speed Calm
Barometer 29.74 in (1008.5 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 5 Dec 10:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.

    Low: 12 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow after 5pm. Mostly cloudy, with a high near 20. Light and variable wind. Little or no snow accumulation expected.

    High: 20 °F

    Partly Sunny
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 6. Calm wind. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 6 °F

    Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 17. Calm wind becoming north around 5 mph.

    High: 17 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -3. Calm wind.

    Low: -3 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow. Mostly cloudy, with a high near 21. Calm wind becoming south around 6 mph in the afternoon.

    High: 21 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 11. South wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 11 °F

    Snow Likely

  • Tuesday

    Tuesday: A chance of rain and snow after noon. Mostly cloudy, with a high near 34. Light and variable wind becoming southwest around 6 mph in the morning. Chance of precipitation is 30%.

    High: 34 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow. Low around 21. South wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 21 °F

    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 12. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.
Saturday
A 40 percent chance of snow after 5pm. Mostly cloudy, with a high near 20. Light and variable wind. Little or no snow accumulation expected.
Saturday Night
Snow. Low around 6. Calm wind. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Sunday
Mostly sunny, with a high near 17. Calm wind becoming north around 5 mph.
Sunday Night
Mostly cloudy, with a low around -3. Calm wind.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 21. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 11. South wind 3 to 6 mph. Chance of precipitation is 60%.
Tuesday
A chance of rain and snow after noon. Mostly cloudy, with a high near 34. Light and variable wind becoming southwest around 6 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
Rain and snow. Low around 21. South wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 30. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 9. Northwest wind 3 to 6 mph. Winds could gust as high as 18 mph.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 22. Northwest wind 3 to 6 mph.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 4. Northwest wind 3 to 5 mph.
Friday
Partly sunny, with a high near 16. Northwest wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
10:26 pm CST Dec 5, 2025
Forecast Valid:
11pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
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