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

86°F

30°C

Humidity 50%
Wind Speed SW 12 mph
Barometer 29.62 in (1002.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 12 Oct 3:55 pm CDT
Extended Forecast for

Tunnel City WI

  • Tonight

    Tonight: Partly cloudy, with a low around 57. South wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 29 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 70. Northwest wind 8 to 11 mph, with gusts as high as 24 mph.

    High: 70 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. North wind around 6 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. North wind 3 to 6 mph.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43. Light northeast wind.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 62. East wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 41. Light northwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 28 mph.

    Low: 41 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 55. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 33 mph.

    High: 55 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 57. South wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 29 mph.
Tuesday
Mostly sunny, with a high near 70. Northwest wind 8 to 11 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 49. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 66. North wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 43. Light northeast wind.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 62. East wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 41. Light northwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 28 mph.
Friday
Partly sunny, with a high near 55. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 33 mph.
Friday Night
Mostly clear, with a low around 28. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 58. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Clear, with a low around 36. Southwest wind 6 to 9 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 64. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 41. Southwest wind 3 to 8 mph. Winds could gust as high as 23 mph.
Monday
Mostly sunny, with a high near 67. Light southwest wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.57°W
Last Update:
4:02 pm CDT Oct 12, 2026
Forecast Valid:
4pm CDT Oct 12, 2026-6pm CDT Oct 19, 2026
 
Forecast Discussion
 
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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