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

60°F

16°C

Humidity 95%
Wind Speed Calm
Barometer 29.99 in (1015.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 13 Aug 9:55 pm CDT
Extended Forecast for

3 Miles W Tunnel City WI

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 7am. Otherwise, sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64. Light south wind.

    Low: 64 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 87. South wind 5 to 8 mph.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. South wind 3 to 5 mph.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South wind around 6 mph. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light and variable wind.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84. Southeast wind 5 to 7 mph.

    High: 84 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 56. Calm wind.
Thursday
Patchy fog before 7am. Otherwise, sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 64. Light south wind.
Friday
Mostly sunny, with a high near 87. South wind 5 to 8 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. South wind 3 to 5 mph.
Saturday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South wind around 6 mph. Chance of precipitation is 30%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light and variable wind.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84. Southeast wind 5 to 7 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southeast wind around 6 mph. Chance of precipitation is 40%.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Southeast wind around 7 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. South wind around 6 mph becoming northeast after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. Northeast wind around 6 mph.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57. Northeast wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 77. Northeast wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Tunnel City WI
 43.99°N 90.63°W
Last Update:
10:59 pm CDT Aug 13, 2025
Forecast Valid:
11pm CDT Aug 13, 2025-6pm CDT Aug 20, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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