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.

A Few Clouds

53°F

12°C

Humidity 94%
Wind Speed Calm
Barometer 30.00 in (1016.0 mb)
Dewpoint 51°F (11°C)
Visibility 9.00 mi
Last update 25 May 3:55 am CDT
Extended Forecast for

Tunnel City WI

  • Memorial Day

    Memorial Day: A slight chance of showers between 8am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 83. South wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. South wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. Southwest wind around 6 mph.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Calm wind. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming northeast around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. East wind 3 to 7 mph. Winds could gust as high as 18 mph.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. East wind around 6 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Memorial Day
A slight chance of showers between 8am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 83. South wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 62. South wind 7 to 9 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 89. Southwest wind around 6 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Calm wind. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming northeast around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Mostly clear, with a low around 55. East wind 3 to 7 mph. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 85. East wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 53. Calm wind.
Friday
Mostly sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 52. Calm wind.
Saturday
Mostly sunny, with a high near 78. East wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 50. East wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 79. East wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.57°W
Last Update:
3:26 am CDT May 25, 2026
Forecast Valid:
4am CDT May 25, 2026-6pm CDT May 31, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation