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

67°F

19°C

Humidity 76%
Wind Speed SW 16 G 28 mph
Barometer 29.63 in (1003.6 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 12 Apr 8:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 78. Light south wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

    High: 78 °F

    Partly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 77. West wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 71. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. East wind around 6 mph becoming south after midnight. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 73. West wind 5 to 7 mph.

    High: 73 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. Southwest wind around 6 mph becoming southeast after midnight.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.
Monday
A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 78. Light south wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 77. West wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 71. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. East wind around 6 mph becoming south after midnight. Chance of precipitation is 60%.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 73. West wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 52. Southwest wind around 6 mph becoming southeast after midnight.
Friday
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 78. Breezy, with a south wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 41. Southwest wind 8 to 13 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 52. Northwest wind 8 to 11 mph.
Saturday Night
A chance of rain and snow showers. Partly cloudy, with a low around 30. Northwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Sunday
A slight chance of rain and snow showers. Mostly sunny, with a high near 54. West wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
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:
6:46 pm CDT Apr 12, 2026
Forecast Valid:
10pm CDT Apr 12, 2026-6pm CDT Apr 19, 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