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.

Mostly Cloudy

62°F

17°C

Humidity 97%
Wind Speed W 3 mph
Barometer 29.68 in (1005.2 mb)
Dewpoint 62°F (17°C)
Visibility 7.00 mi
Last update 14 Apr 10:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then a slight chance of showers after 3am. Widespread fog, mainly after 5am. Otherwise, mostly cloudy, with a low around 53. Light northwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely and
    Fog

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Widespread fog, mainly before 8am. Otherwise, mostly cloudy, with a high near 70. Light and variable wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    Showers and
    Fog

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 50. East wind 3 to 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 70. Light and variable wind. Chance of precipitation is 30%.

    High: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. Light southeast wind.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. South wind 5 to 15 mph, with gusts as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 38. South wind 9 to 11 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Showers

  • Saturday

    Saturday: A chance of rain showers before 4pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 50. Breezy, with a west wind 9 to 17 mph. Chance of precipitation is 50%.

    High: 50 °F

    Chance
    Showers then
    Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: A chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 28. West wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Tonight
Showers and thunderstorms likely before 2am, then a slight chance of showers after 3am. Widespread fog, mainly after 5am. Otherwise, mostly cloudy, with a low around 53. Light northwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, with thunderstorms also possible after 4pm. Widespread fog, mainly before 8am. Otherwise, mostly cloudy, with a high near 70. Light and variable wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 50. East wind 3 to 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 70. Light and variable wind. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 52. Light southeast wind.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. South wind 5 to 15 mph, with gusts as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm. Low around 38. South wind 9 to 11 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday
A chance of rain showers before 4pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 50. Breezy, with a west wind 9 to 17 mph. Chance of precipitation is 50%.
Saturday Night
A chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 28. West wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 49. Northwest wind 9 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 27. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 57. Southeast wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 36. South wind around 7 mph.
Tuesday
Sunny, with a high near 66. South wind 7 to 11 mph, with gusts as high as 20 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:
8:06 pm CDT Apr 14, 2026
Forecast Valid:
11pm CDT Apr 14, 2026-6pm CDT Apr 21, 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