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

40°F

4°C

Humidity 63%
Wind Speed Calm
Barometer 29.88 in (1013.2 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 14 Feb 5:55 pm CST
Extended Forecast for

Tunnel City WI

  • Tonight

    Tonight: Partly cloudy, with a low around 26. Light southwest wind.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 51. Light west wind.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36. Calm wind becoming southwest 5 to 8 mph after midnight. Winds could gust as high as 20 mph.

    Low: 36 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 56. Southwest wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 18 mph.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. Calm wind becoming east around 6 mph after midnight.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 50. East wind 6 to 15 mph, with gusts as high as 26 mph.

    High: 50 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 38. East wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly sunny, with a high near 53. South wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 53 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 26. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 26. Light southwest wind.
Sunday
Sunny, with a high near 51. Light west wind.
Sunday Night
Mostly cloudy, with a low around 36. Calm wind becoming southwest 5 to 8 mph after midnight. Winds could gust as high as 20 mph.
Washington's Birthday
Sunny, with a high near 56. Southwest wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Partly cloudy, with a low around 32. Calm wind becoming east around 6 mph after midnight.
Tuesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 50. East wind 6 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Rain. Low around 38. East wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Wednesday
A 50 percent chance of rain. Mostly sunny, with a high near 53. South wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 26. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday
A chance of rain and snow after noon. Partly sunny, with a high near 40. West wind 7 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 20. North wind 7 to 9 mph, with gusts as high as 20 mph.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 32. Northwest wind 7 to 9 mph, with gusts as high as 18 mph.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 15. Northwest wind around 7 mph.
Saturday
A 20 percent chance of snow. Mostly sunny, with a high near 32. West wind 6 to 9 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:
5:31 pm CST Feb 14, 2026
Forecast Valid:
6pm CST Feb 14, 2026-6pm CST Feb 21, 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