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.

Light Rain Fog/Mist

43°F

6°C

Humidity 95%
Wind Speed NW 10 mph
Barometer 29.62 in (1003.7 mb)
Dewpoint 42°F (6°C)
Visibility 1.38 mi
Wind Chill37°F (3°C)
Last update 7 Mar 6:55 am CST
Extended Forecast for

Wilton WI

  • Today

    Today: A 30 percent chance of showers before 8am. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a temperature falling to around 34 by 2pm. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 43 °F⇓

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Southwest wind 7 to 14 mph, with gusts as high as 29 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 61. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Southwest wind 9 to 13 mph, with gusts as high as 26 mph.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 66. Southwest wind 5 to 8 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35. Light and variable wind becoming east 5 to 8 mph after midnight. Winds could gust as high as 18 mph.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers after noon. Mostly sunny, with a high near 52. East wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 52 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 28. Northeast wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    Low: 28 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 40 percent chance of snow showers. Mostly cloudy, with a high near 42. Northwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 42 °F

    Chance Snow
    Showers

Detailed Forecast

Today
A 30 percent chance of showers before 8am. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a temperature falling to around 34 by 2pm. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 30. Southwest wind 7 to 14 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 61. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 44. Southwest wind 9 to 13 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 66. Southwest wind 5 to 8 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 35. Light and variable wind becoming east 5 to 8 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
A 40 percent chance of showers after noon. Mostly sunny, with a high near 52. East wind 8 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 28. Northeast wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 42. Northwest wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 21. Northwest wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 20 mph.
Thursday
Partly sunny, with a high near 46. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 30. South wind 7 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Friday
A chance of rain and snow showers. Mostly cloudy, with a high near 49. Breezy, with a southwest wind 10 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
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:
5:46 am CST Mar 7, 2026
Forecast Valid:
7am CST Mar 7, 2026-6pm CDT Mar 13, 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