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.

A Few Clouds

82°F

28°C

Humidity 49%
Wind Speed Calm
Barometer 29.98 in (1015.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 26 May 10:55 am CDT
Extended Forecast for

Tunnel City WI

  • Today

    Today: A 10 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 89. Southwest wind 6 to 8 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 59. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. North wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 30%.

    High: 87 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 53. Light northeast wind becoming east 5 to 9 mph in the evening. Winds could gust as high as 21 mph.

    Low: 53 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. East wind 3 to 6 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Calm wind.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 89. Southwest wind 6 to 8 mph.
Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 59. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. North wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 53. Light northeast wind becoming east 5 to 9 mph in the evening. Winds could gust as high as 21 mph.
Thursday
Sunny, with a high near 78. East wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 50. Calm wind.
Friday
Sunny, with a high near 83. Calm wind.
Friday Night
Mostly clear, with a low around 54. Calm wind.
Saturday
Sunny, with a high near 82. Calm wind becoming east 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 51. East wind around 6 mph becoming calm after midnight.
Sunday
Sunny, with a high near 81. Calm wind becoming east around 5 mph.
Sunday Night
Mostly clear, with a low around 52. Calm wind.
Monday
Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.54°W
Last Update:
10:51 am CDT May 26, 2026
Forecast Valid:
11am CDT May 26, 2026-6pm CDT Jun 1, 2026
 
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Additional Resources

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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