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

44°F

7°C

Humidity 35%
Wind Speed W 14 G 26 mph
Barometer 29.96 in (1015.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 18 Apr 6:55 pm CDT
Extended Forecast for

Wilton WI

  • Tonight

    Tonight: Partly cloudy, with a low around 29. West wind 5 to 14 mph, with gusts as high as 24 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of snow showers before 9am, then a chance of sprinkles and flurries between 9am and 10am. Widespread frost before 7am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 47. Northwest wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 47 °F

    Chance
    Sprinkles/Snow
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 55. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 55 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South wind around 8 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 72. Southwest wind around 6 mph becoming northwest in the afternoon.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 40. Calm wind.

    Low: 40 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. Southeast wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 29. West wind 5 to 14 mph, with gusts as high as 24 mph.
Sunday
A chance of snow showers before 9am, then a chance of sprinkles and flurries between 9am and 10am. Widespread frost before 7am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 47. Northwest wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 55. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Partly cloudy, with a low around 41. South wind around 8 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 72. Southwest wind around 6 mph becoming northwest in the afternoon.
Tuesday Night
Clear, with a low around 40. Calm wind.
Wednesday
Sunny, with a high near 73. Calm wind becoming southeast 5 to 8 mph in the morning.
Wednesday Night
Mostly clear, with a low around 54. Southeast wind 6 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 76. Breezy, with a south wind 9 to 17 mph, with gusts as high as 26 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. South wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. Southwest wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 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 21 mph.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 58. Northwest wind 8 to 13 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:
Wilton WI
 43.81°N 90.52°W
Last Update:
6:02 pm CDT Apr 18, 2026
Forecast Valid:
7pm CDT Apr 18, 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