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.

Fair

33°F

1°C

Humidity 71%
Wind Speed Calm
Barometer 30.15 in (1022.5 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 12 Mar 9:55 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

  • Today

    Today: A 30 percent chance of rain, mainly after 5pm. Increasing clouds, with a high near 46. Light and variable wind becoming south 10 to 15 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 46 °F

    Sunny then
    Chance Rain

  • Tonight

    Tonight: Rain before 5am, then a chance of rain and snow. Low around 30. Breezy, with a south wind 15 to 22 mph becoming west after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 30 °F

    Breezy. Rain
    then
    Rain/Snow
    Likely

  • Friday

    Friday: A 30 percent chance of snow, mainly before 7am. Patchy blowing snow before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 41. Windy, with a northwest wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 50 mph.

    High: 41 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • 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%. New snow accumulation of 6 to 10 inches possible.

    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 17 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.

    Low: 10 °F

    Snow Likely
    and Blustery

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 21. Blustery, with a northwest wind 15 to 18 mph, with gusts as high as 29 mph.

    High: 21 °F

    Slight Chance
    Snow and
    Blustery

Detailed Forecast

Today
A 30 percent chance of rain, mainly after 5pm. Increasing clouds, with a high near 46. Light and variable wind becoming south 10 to 15 mph in the afternoon. Winds could gust as high as 24 mph.
Tonight
Rain before 5am, then a chance of rain and snow. Low around 30. Breezy, with a south wind 15 to 22 mph becoming west after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday
A 30 percent chance of snow, mainly before 7am. Patchy blowing snow before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 41. Windy, with a northwest wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 50 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%. New snow accumulation of 6 to 10 inches possible.
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 17 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
Monday
A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 21. Blustery, with a northwest wind 15 to 18 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around -4. West wind 5 to 10 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 25. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 8. Light and variable wind.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 38. Southeast wind 3 to 6 mph.
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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:
10:07 am CDT Mar 12, 2026
Forecast Valid:
10am 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