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.

Light Rain Fog/Mist

33°F

1°C

Humidity 91%
Wind Speed NW 5 mph
Barometer 29.84 in (1011.6 mb)
Dewpoint 30°F (-1°C)
Visibility 1.13 mi
Wind Chill28°F (-2°C)
Last update 11 Mar 8:55 am CDT
Extended Forecast for

Sparta WI

Winter Weather Advisory March 11, 09:37am until March 11, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory March 11, 09:37am until March 11, 01:00pm

    NOW until 1:00pm Wed

    Winter Weather Advisory

  • Today

    High: 41 °F

    Snow

  • Tonight

    Tonight: Mostly clear, with a low around 22. Northwest wind around 6 mph becoming calm in the evening.

    Low: 22 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of rain and snow showers between 1pm and 4pm, then a chance of rain showers after 4pm. Increasing clouds, with a high near 45. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 45 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain showers before 4am, then snow showers likely. Low around 30. Breezy, with a south wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Showers then
    Rain/Snow and
    Breezy

  • Friday

    Friday: Snow showers likely before 7am. Partly sunny, with a high near 40. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Breezy. Snow
    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow after 1pm. Mostly cloudy, with a high near 40. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 40 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 26. East wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    Low: 26 °F

    Snow

Detailed Forecast

Today
Snow, mainly before 1pm. High near 41. Northwest wind 8 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.
Tonight
Mostly clear, with a low around 22. Northwest wind around 6 mph becoming calm in the evening.
Thursday
A chance of rain and snow showers between 1pm and 4pm, then a chance of rain showers after 4pm. Increasing clouds, with a high near 45. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
Rain showers before 4am, then snow showers likely. Low around 30. Breezy, with a south wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely before 7am. Partly sunny, with a high near 40. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Mostly cloudy, with a low around 22. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
A 40 percent chance of snow after 1pm. Mostly cloudy, with a high near 40. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Snow. Low around 26. East wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Sunday
Snow, possibly mixed with rain, becoming all snow after 1pm. High near 35. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Sunday Night
A 40 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 11. Blustery, with a north wind around 16 mph, with gusts as high as 30 mph.
Monday
Partly sunny, with a high near 25. Blustery, with a northwest wind 13 to 16 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 5. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 30. Calm wind becoming southwest around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
8:42 am CDT Mar 11, 2026
Forecast Valid:
9am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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