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.

Overcast

37°F

3°C

Humidity 76%
Wind Speed NE 3 mph
Barometer 29.83 in (1011.1 mb)
Dewpoint 30°F (-1°C)
Visibility 9.00 mi
Last update 10 Mar 9:55 pm CDT
Extended Forecast for

Sparta WI

Winter Weather Advisory March 10, 11:00pm until March 11, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A slight chance of snow showers between 4am and 5am, then a chance of sleet. Cloudy, with a low around 30. North wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Cloudy then
    Chance
    Snow/Sleet

  • Wednesday

    Wednesday: Rain and snow before 3pm, then a slight chance of snow between 3pm and 4pm. High near 39. North wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 39 °F

    Rain/Snow
    then Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 22 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Increasing clouds, with a high near 46. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain before 1am, then rain and snow likely. Low around 30. Breezy, with a south wind 8 to 18 mph becoming west after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain then
    Rain/Snow and
    Breezy

  • Friday

    Friday: Snow likely before 7am. Partly sunny, with a high near 40. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 40 °F

    Breezy. Snow
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 21 °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 6 mph in the afternoon.

    High: 40 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow likely, possibly mixed with rain before 1am, then snow. Low around 26. East wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 26 °F

    Rain/Snow

Detailed Forecast

Tonight
A slight chance of snow showers between 4am and 5am, then a chance of sleet. Cloudy, with a low around 30. North wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday
Rain and snow before 3pm, then a slight chance of snow between 3pm and 4pm. High near 39. North wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Partly cloudy, with a low around 22. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Thursday
A slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Increasing clouds, with a high near 46. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Thursday Night
Rain before 1am, then rain and snow likely. Low around 30. Breezy, with a south wind 8 to 18 mph becoming west after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday
Snow likely before 7am. Partly sunny, with a high near 40. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
Mostly cloudy, with a low around 21. 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 6 mph in the afternoon.
Saturday Night
Snow likely, possibly mixed with rain before 1am, then snow. Low around 26. East wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday
Snow before 1pm, then snow likely, possibly mixed with rain. High near 35. Breezy, with a northeast wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 11. Northwest wind 11 to 13 mph, with gusts as high as 28 mph.
Monday
Partly sunny, with a high near 26. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 4. Northwest wind 5 to 7 mph becoming calm in the evening.
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
 43.95°N 90.81°W
Last Update:
10:16 pm CDT Mar 10, 2026
Forecast Valid:
10pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation