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.

Partly Cloudy

19°F

-7°C

Humidity 89%
Wind Speed Calm
Barometer 30.12 in (1021.5 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 12 Mar 12:55 am CDT
Extended Forecast for

Sparta WI

Wind Advisory March 13, 12:00am until March 13, 01:00pm
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 23. Light west wind.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow, mainly after 5pm. Increasing clouds, with a high near 45. Light and variable wind becoming south 8 to 13 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.

    High: 45 °F

    Sunny then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain before 2am, then a chance of rain and snow between 2am and 3am, then a slight chance of snow after 3am. Patchy blowing snow after 5am. Low around 30. Breezy, with a south wind 18 to 22 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Friday

    Friday: Patchy blowing snow before 8am. Mostly cloudy, with a high near 41. Windy, with a northwest wind 23 to 28 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 47 mph.

    High: 41 °F

    Windy. Patchy
    Blowing Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. Northwest wind around 6 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 40. Light southeast wind.

    High: 40 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Low around 27. Light east wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 27 °F

    Heavy Snow

  • Sunday

    Sunday: Snow before 1pm, then snow, possibly mixed with rain. High near 34. Breezy, with a northeast wind 10 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.

    High: 34 °F

    Snow then
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 10. Blustery, with a north wind 14 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.

    Low: 10 °F

    Snow Likely
    and Blustery

Detailed Forecast

Overnight
Partly cloudy, with a low around 23. Light west wind.
Thursday
A chance of rain and snow, mainly after 5pm. Increasing clouds, with a high near 45. Light and variable wind becoming south 8 to 13 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Thursday Night
Rain before 2am, then a chance of rain and snow between 2am and 3am, then a slight chance of snow after 3am. Patchy blowing snow after 5am. Low around 30. Breezy, with a south wind 18 to 22 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday
Patchy blowing snow before 8am. Mostly cloudy, with a high near 41. Windy, with a northwest wind 23 to 28 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 47 mph.
Friday Night
Mostly cloudy, with a low around 23. Northwest wind around 6 mph becoming calm in the evening.
Saturday
A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 40. Light southeast wind.
Saturday Night
Snow. The snow could be heavy at times. Low around 27. Light east wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Sunday
Snow before 1pm, then snow, possibly mixed with rain. High near 34. Breezy, with a northeast wind 10 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.
Sunday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 10. Blustery, with a north wind 14 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Monday
A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 21. Northwest wind 11 to 15 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around -4. Northwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 25. Calm wind becoming west around 5 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 8. Calm wind.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 38. Calm wind becoming south 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:
11:36 pm CDT Mar 11, 2026
Forecast Valid:
1am CDT Mar 12, 2026-6pm CDT Mar 18, 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