National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Winter Storm Through Monday Morning

A dangerous winter storm will unfold will continue through Monday morning bringing heavy snowfall (possibly record-breaking for some) and blizzard conditions. Make appropriate preparations, as power outages will be possible. Travel will become dangerous, if not impossible. Read More >

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Light Rain

33°F

1°C

Humidity 80%
Wind Speed NE 15 G 24 mph
Barometer 29.57 in (1002.5 mb)
Dewpoint 28°F (-2°C)
Visibility 5.00 mi
Wind Chill23°F (-5°C)
Last update 15 Mar 10:55 am CDT
Extended Forecast for

Sparta WI

Winter Storm Warning March 15, 11:51am until March 16, 01:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning March 15, 11:51am until March 16, 01:00pm

    NOW until 1:00pm Mon

    Winter Storm Warning

  • Today

    High: 36 °F

    Snow/Sleet
    and Areas
    Blowing Snow

  • Tonight

    Tonight: Snow, mainly after 7pm. The snow could be heavy at times. Widespread blowing snow, mainly after 1am. Low around 14. Blustery, with a north wind 20 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    Low: 14 °F

    Heavy Snow
    and Blowing
    Snow

  • Monday

    Monday: Snow likely, mainly before noon. The snow could be heavy at times. Areas of blowing snow. Mostly cloudy, with a high near 20. Wind chill values as low as -4. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 20 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -11. Northwest wind 5 to 11 mph, with gusts as high as 25 mph.

    Low: -3 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23. Light and variable wind.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow, mainly before 1am. Low around 16. South wind 3 to 6 mph. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 16 °F

    Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 45. South wind 3 to 5 mph.

    High: 45 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow, possibly mixed with sleet, becoming all snow after 3pm. The snow could be heavy at times. Patchy blowing snow between 4pm and 5pm. High near 36. Breezy, with a north wind 17 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Total daytime snow and sleet accumulation of 4 to 8 inches possible.
Tonight
Snow, mainly after 7pm. The snow could be heavy at times. Widespread blowing snow, mainly after 1am. Low around 14. Blustery, with a north wind 20 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
Monday
Snow likely, mainly before noon. The snow could be heavy at times. Areas of blowing snow. Mostly cloudy, with a high near 20. Wind chill values as low as -4. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -11. Northwest wind 5 to 11 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 23. Light and variable wind.
Tuesday Night
Snow, mainly before 1am. Low around 16. South wind 3 to 6 mph. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Partly sunny, with a high near 45. South wind 3 to 5 mph.
Wednesday Night
Mostly cloudy, with a low around 29. Calm wind.
Thursday
Mostly sunny, with a high near 49. Calm wind.
Thursday Night
Mostly cloudy, with a low around 31. Light south wind.
Friday
Partly sunny, with a high near 53. Southwest wind 3 to 7 mph.
Friday Night
Mostly cloudy, with a low around 32. West wind around 6 mph.
Saturday
Mostly sunny, with a high near 54. Northwest wind 5 to 8 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:
11:36 am CDT Mar 15, 2026
Forecast Valid:
11am CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
Forecast Discussion
 
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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