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

85°F

29°C

Humidity 37%
Wind Speed Calm
Barometer 29.88 in (1011.8 mb)
Dewpoint 56°F (13°C)
Visibility 8.00 mi
Heat Index84°F (29°C)
Last update 19 Jun 2:55 pm CDT
Extended Forecast for

Tunnel City WI

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 62. Southwest wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly before 10am. Partly sunny, with a high near 83. South wind 6 to 10 mph, with gusts as high as 21 mph. New precipitation amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    T-storms then
    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind 7 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 93. Heat index values as high as 102. Breezy, with a southwest wind 14 to 17 mph, with gusts as high as 28 mph.

    High: 93 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southwest wind around 13 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy, with a south wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 77. South wind 11 to 14 mph, with gusts as high as 26 mph.

    Low: 77 °F

    Mostly Clear
    then Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 89. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 89 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 64. West wind 3 to 7 mph. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 62. Southwest wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 50 percent chance of showers and thunderstorms, mainly before 10am. Partly sunny, with a high near 83. South wind 6 to 10 mph, with gusts as high as 21 mph. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind 7 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 93. Heat index values as high as 102. Breezy, with a southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 77. Southwest wind around 13 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 95. Breezy, with a south wind 11 to 16 mph, with gusts as high as 26 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 77. South wind 11 to 14 mph, with gusts as high as 26 mph.
Monday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 89. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 64. West wind 3 to 7 mph. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Northeast wind around 6 mph. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 59. North wind around 6 mph becoming southeast after midnight. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 76. Southeast wind 6 to 8 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 61. East wind 3 to 6 mph. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.54°W
Last Update:
2:28 pm CDT Jun 19, 2025
Forecast Valid:
3pm CDT Jun 19, 2025-6pm CDT Jun 26, 2025
 
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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