High Impact Winter Storm This Weekend

A high impact winter storm is expected Saturday night through Monday morning which could bring heavy snow, freezing rain, and blizzard conditions. Monitor the forecast for the latest updates and make appropriate preparations! Read More >

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

A Few Clouds

18°F

-8°C

Humidity 92%
Wind Speed Calm
Barometer 30.12 in (1021.4 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 14 Mar 2:55 am CDT
Extended Forecast for

3 Miles S Tunnel City WI

Winter Storm Warning March 14, 07:00pm until March 16, 01:00pm
Click here for hazard details and duration
Winter Storm Warning
  • Overnight

    Overnight: Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after 3pm.  Mostly cloudy, with a high near 40. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 40 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow, freezing rain, and sleet before 3am, then freezing rain and sleet between 3am and 4am, then freezing rain after 4am.  Patchy blowing snow between midnight and 1am. Low around 27. Breezy, with an east wind 11 to 16 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 37 mph.  Chance of precipitation is 90%. New ice accumulation of around a 0.1 of an inch possible.  New snow and sleet accumulation of 1 to 2 inches possible.

    Low: 27 °F

    Wintry Mix
    and Patchy
    Blowing Snow

  • Sunday

    Sunday: Rain, freezing rain, and sleet before 1pm, then rain, snow, freezing rain, and sleet between 1pm and 4pm, then snow after 4pm. The snow and sleet could be heavy at times.  Areas of blowing snow after 4pm. High near 34. Breezy, with an east wind 22 to 25 mph becoming north in the afternoon. Winds could gust as high as 37 mph.  Chance of precipitation is 100%. New ice accumulation of 0.1 to 0.3 of an inch possible.  New snow and sleet accumulation of 1 to 3 inches possible.

    High: 34 °F

    Wintry Mix
    and Areas
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times.  Widespread blowing snow, mainly after 7pm. Low around 13. Windy, with a north wind 25 to 29 mph, with gusts as high as 45 mph.  Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: 13 °F

    Heavy Snow
    and Blowing
    Snow

  • Monday

    Monday: A 50 percent chance of snow, mainly before 1pm.  Widespread blowing snow, mainly before 11am. Mostly cloudy, with a high near 19. Windy, with a northwest wind 22 to 28 mph, with gusts as high as 44 mph.  New snow accumulation of around an inch possible.

    High: 19 °F

    Chance Snow
    and Blowing
    Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around -2. Blustery, with a northwest wind 8 to 16 mph, with gusts as high as 29 mph.

    Low: -2 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23. West wind around 6 mph.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 1am.  Mostly cloudy, with a low around 14. South wind 5 to 9 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    Low: 14 °F

    Snow Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 22. Calm wind.
Saturday
A 30 percent chance of snow, mainly after 3pm. Mostly cloudy, with a high near 40. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
Snow, freezing rain, and sleet before 3am, then freezing rain and sleet between 3am and 4am, then freezing rain after 4am. Patchy blowing snow between midnight and 1am. Low around 27. Breezy, with an east wind 11 to 16 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New ice accumulation of around a 0.1 of an inch possible. New snow and sleet accumulation of 1 to 2 inches possible.
Sunday
Rain, freezing rain, and sleet before 1pm, then rain, snow, freezing rain, and sleet between 1pm and 4pm, then snow after 4pm. The snow and sleet could be heavy at times. Areas of blowing snow after 4pm. High near 34. Breezy, with an east wind 22 to 25 mph becoming north in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 100%. New ice accumulation of 0.1 to 0.3 of an inch possible. New snow and sleet accumulation of 1 to 3 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 7pm. Low around 13. Windy, with a north wind 25 to 29 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Monday
A 50 percent chance of snow, mainly before 1pm. Widespread blowing snow, mainly before 11am. Mostly cloudy, with a high near 19. Windy, with a northwest wind 22 to 28 mph, with gusts as high as 44 mph. New snow accumulation of around an inch possible.
Monday Night
Partly cloudy, with a low around -2. Blustery, with a northwest wind 8 to 16 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 23. West wind around 6 mph.
Tuesday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 14. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday
Partly sunny, with a high near 44. South wind around 6 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 28. Calm wind becoming southwest around 5 mph after midnight.
Thursday
Mostly sunny, with a high near 50. Southwest wind around 6 mph.
Thursday Night
Mostly cloudy, with a low around 29. Southwest wind around 6 mph becoming west after midnight.
Friday
Partly sunny, with a high near 50. West wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Tunnel City WI
 43.94°N 90.54°W
2:11 am CDT Mar 14, 2026
3am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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