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

55°F

13°C

Humidity 98%
Wind Speed Calm
Barometer 29.93 in (1013.7 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Jun 10:55 pm CDT
Extended Forecast for

2 Miles WSW Tunnel City WI

  • Tonight

    Tonight: Partly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. Light northeast wind.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers between 1pm and 3pm. Increasing clouds, with a high near 77. Calm wind. Chance of precipitation is 20%.

    High: 77 °F

    Sunny then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 57. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 77. West wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 53. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. Northwest wind 3 to 6 mph.

    High: 72 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. Light northwest wind.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 51. Calm wind.
Monday
Mostly sunny, with a high near 76. Light northeast wind.
Monday Night
Mostly clear, with a low around 51. Calm wind.
Tuesday
A slight chance of showers between 1pm and 3pm. Increasing clouds, with a high near 77. Calm wind. Chance of precipitation is 20%.
Tuesday Night
A chance of thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 57. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 77. West wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 53. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. Northwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 51. Light northwest wind.
Friday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. Calm wind.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 56. Calm wind.
Saturday
Mostly sunny, with a high near 79. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. Southeast wind 7 to 9 mph, with gusts as high as 23 mph.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 83. Breezy, with a southeast wind 11 to 16 mph, with gusts as high as 26 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Tunnel City WI
 43.99°N 90.6°W
Last Update:
10:36 pm CDT Jun 21, 2026
Forecast Valid:
11pm CDT Jun 21, 2026-6pm CDT Jun 28, 2026
 
Forecast Discussion
 
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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