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.

Mostly Cloudy

26°F

-3°C

Humidity 89%
Wind Speed Calm
Barometer 30.02 in (1017.8 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 19 Apr 4:55 am CDT
Extended Forecast for

Tunnel City WI

  • Today

    Today: A slight chance of snow showers between 7am and 9am. Mostly cloudy, then gradually becoming sunny, with a high near 46. Northwest wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Snow Showers
    then Sunny

  • Tonight

    Tonight: Widespread frost after 5am. Otherwise, mostly clear, with a low around 22. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 22 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 7am. Otherwise, mostly sunny, with a high near 54. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 54 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 72. Southwest wind around 5 mph becoming northwest in the afternoon.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74. Southeast wind 3 to 8 mph.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. South wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 75. Breezy, with a south wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 75 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

Detailed Forecast

Today
A slight chance of snow showers between 7am and 9am. Mostly cloudy, then gradually becoming sunny, with a high near 46. Northwest wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tonight
Widespread frost after 5am. Otherwise, mostly clear, with a low around 22. Northwest wind 5 to 8 mph becoming calm in the evening.
Monday
Widespread frost before 7am. Otherwise, mostly sunny, with a high near 54. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 41. South wind 6 to 9 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 72. Southwest wind around 5 mph becoming northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 39. Calm wind.
Wednesday
Sunny, with a high near 74. Southeast wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 56. South wind 7 to 9 mph, with gusts as high as 21 mph.
Thursday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 75. Breezy, with a south wind 10 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 63. West wind 10 to 13 mph, with gusts as high as 21 mph.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 37. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 60. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.57°W
Last Update:
3:26 am CDT Apr 19, 2026
Forecast Valid:
5am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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