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.

A Few Clouds

41°F

5°C

Humidity 41%
Wind Speed SW 7 mph
Barometer 30.07 in (1019.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 12 Mar 12:55 pm CDT
Extended Forecast for

Tomah WI

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

  • This Afternoon

    This Afternoon: A slight chance of rain and snow between 4pm and 5pm, then a chance of rain. Mostly cloudy, with a high near 46. Breezy, with a south wind 8 to 16 mph. Chance of precipitation is 30%.

    High: 46 °F

    Chance
    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Rain and snow before 1am, then a chance of rain between 1am and 5am, then a chance of rain and snow after 5am. Low around 29. Breezy, with a south wind 17 to 23 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: 29 °F

    Rain/Snow and
    Breezy

  • Friday

    Friday: A 30 percent chance of snow, mainly before 9am. Patchy blowing snow before 11am. Mostly cloudy, with a high near 40. Windy, with a northwest wind 25 to 30 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 55 mph.

    High: 40 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 40. Calm wind becoming south around 5 mph in the afternoon.

    High: 40 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Low around 26. East wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.

    Low: 26 °F

    Heavy Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. Patchy blowing snow after 9am. High near 32. Breezy, with a northeast wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.

    High: 32 °F

    Heavy Snow
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 10. Blustery, with a north wind around 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.

    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 16 to 20 mph, with gusts as high as 30 mph.

    High: 21 °F

    Slight Chance
    Snow and
    Blustery

Detailed Forecast

This Afternoon
A slight chance of rain and snow between 4pm and 5pm, then a chance of rain. Mostly cloudy, with a high near 46. Breezy, with a south wind 8 to 16 mph. Chance of precipitation is 30%.
Tonight
Rain and snow before 1am, then a chance of rain between 1am and 5am, then a chance of rain and snow after 5am. Low around 29. Breezy, with a south wind 17 to 23 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
A 30 percent chance of snow, mainly before 9am. Patchy blowing snow before 11am. Mostly cloudy, with a high near 40. Windy, with a northwest wind 25 to 30 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 55 mph.
Friday Night
Mostly cloudy, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Saturday
A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 40. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Snow. The snow could be heavy at times. Low around 26. East wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.
Sunday
Snow. The snow could be heavy at times. Patchy blowing snow after 9am. High near 32. Breezy, with a northeast wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.
Sunday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 10. Blustery, with a north wind around 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.
Monday
A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 21. Blustery, with a northwest wind 16 to 20 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around -5. Northwest wind 5 to 11 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 25. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 6. Light and variable wind.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 37. Southeast wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
12:32 pm CDT Mar 12, 2026
Forecast Valid:
1pm CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
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Additional Resources

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