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.

Fair

78°F

26°C

Humidity 47%
Wind Speed NW 10 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 8 Aug 11:55 am CDT
Extended Forecast for

4 Miles NNW Sparta WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. West wind around 6 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 61. Calm wind. Chance of precipitation is 30%.

    Low: 61 °F

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Some of the storms could produce heavy rainfall. High near 81. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Heavy Rain
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 82 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 81. West wind around 6 mph.
Tonight
A slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 61. Calm wind. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Some of the storms could produce heavy rainfall. High near 81. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.
Monday
A slight chance of thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 20%.
Monday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 84. Calm wind.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 59. Light west wind.
Thursday
Mostly sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 54. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Light east wind.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Sparta WI
 43.99°N 90.84°W
Last Update:
10:31 am CDT Aug 8, 2026
Forecast Valid:
12pm CDT Aug 8, 2026-6pm CDT Aug 14, 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