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.

Overcast

35°F

2°C

Humidity 61%
Wind Speed NW 10 mph
Barometer 30.12 in (1021.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 22 Mar 6:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly clear, with a low around 24. North wind around 6 mph becoming calm in the evening.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 49. Calm wind.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 33. Calm wind becoming south around 5 mph after midnight.

    Low: 33 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. South wind 5 to 7 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. Light south wind.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 64. Southwest wind 3 to 6 mph.

    High: 64 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Southeast wind around 5 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Southeast wind 5 to 11 mph becoming northwest in the afternoon.

    High: 61 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. North wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 24. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 49. Calm wind.
Monday Night
Increasing clouds, with a low around 33. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 57. South wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 38. Light south wind.
Wednesday
Mostly cloudy, with a high near 64. Southwest wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 42. Southeast wind around 5 mph.
Thursday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Southeast wind 5 to 11 mph becoming northwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 24. North wind 6 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 43. Northwest wind 5 to 8 mph.
Friday Night
Mostly clear, with a low around 24. Northwest wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 52. West wind 5 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 31. Southwest wind around 7 mph.
Sunday
Sunny, with a high near 59. Southwest wind 5 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:
5:56 pm CDT Mar 22, 2026
Forecast Valid:
7pm CDT Mar 22, 2026-6pm CDT Mar 29, 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