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

68°F

20°C

Humidity 34%
Wind Speed Calm
Barometer 30.18 in (1022.6 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 5 Oct 3:55 pm CDT
Extended Forecast for

Tunnel City WI

  • Tonight

    Tonight: Mostly clear, with a low around 49. Calm wind becoming south around 6 mph after midnight. Winds could gust as high as 18 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73. Breezy, with a southwest wind 8 to 16 mph, with gusts as high as 30 mph.

    High: 73 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. Southwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 71. Light west wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Light west wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66. Calm wind becoming west around 6 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 49. Calm wind becoming south around 6 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 73. Breezy, with a southwest wind 8 to 16 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 50. Southwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 71. Light west wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 44. Light west wind.
Thursday
Mostly sunny, with a high near 65. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 42. Calm wind.
Friday
Mostly sunny, with a high near 66. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 72. South wind 8 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 58. South wind 9 to 15 mph, with gusts as high as 28 mph.
Sunday
Sunny, with a high near 73. Southwest wind around 11 mph, with gusts as high as 24 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 51. South wind around 7 mph, with gusts as high as 20 mph.
Columbus Day
A 30 percent chance of showers. Partly sunny, with a high near 63. Southeast wind 6 to 8 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:
1:26 pm CDT Oct 5, 2026
Forecast Valid:
4pm CDT Oct 5, 2026-6pm CDT Oct 12, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation