National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
News Headlines
Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

36°F

2°C

Humidity 82%
Wind Speed NW 8 mph
Barometer 29.85 in (1011.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 9 Jan 7:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Partly sunny, with a high near 38. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 24 mph.

    High: 38 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 5am. Increasing clouds, with a low around 24. Calm wind becoming west around 5 mph after midnight. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a temperature rising to near 30 by noon, then falling to around 24 during the remainder of the day. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 22 mph. New snow accumulation of less than one inch possible.

    High: 30 °F⇓

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 28. Northwest wind around 6 mph becoming southwest in the afternoon.

    High: 28 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. Southwest wind 3 to 5 mph.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40. Southwest wind 3 to 6 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. Light southwest wind.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain. Mostly cloudy, with a high near 42. West wind 3 to 6 mph.

    High: 42 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 38. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 24 mph.
Tonight
A 40 percent chance of snow, mainly after 5am. Increasing clouds, with a low around 24. Calm wind becoming west around 5 mph after midnight. New snow accumulation of less than a half inch possible.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a temperature rising to near 30 by noon, then falling to around 24 during the remainder of the day. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 22 mph. New snow accumulation of less than one inch possible.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 28. Northwest wind around 6 mph becoming southwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 20. Southwest wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 40. Southwest wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 31. Light southwest wind.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 42. West wind 3 to 6 mph.
Tuesday Night
A chance of rain and snow before midnight, then a chance of snow. Mostly cloudy, with a low around 24. Northwest wind around 6 mph. Chance of precipitation is 30%.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 30. North wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 15. North wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of snow. Partly sunny, with a high near 31. Calm wind becoming south around 6 mph in the afternoon.
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:
8:22 am CST Jan 9, 2026
Forecast Valid:
8am CST Jan 9, 2026-6pm CST Jan 15, 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