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.

Overcast

24°F

-4°C

Humidity 80%
Wind Speed SW 8 mph
Barometer 29.54 in (1002.0 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 15 Jan 9:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Snow, mainly after 1am. Temperature rising to around 29 by 3am. Southwest wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 24 °F⇑

    Chance Snow
    then Snow

  • Friday

    Friday: Snow showers likely, mainly between 10am and 5pm. Cloudy, with a temperature rising to near 31 by 10am, then falling to around 21 during the remainder of the day. West wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 31 °F⇓

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 8. Wind chill values as low as -2. West wind 7 to 10 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.

    Low: 8 °F

    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 17. Wind chill values as low as -2. Northwest wind 7 to 11 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.

    High: 17 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1. Northwest wind 5 to 9 mph becoming light west after midnight. Winds could gust as high as 23 mph.

    Low: -1 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of snow. Mostly cloudy, with a high near 16. Light southwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.

    High: 16 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -4. Northwest wind 8 to 10 mph, with gusts as high as 25 mph.

    Low: -4 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 4 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around -4. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: -4 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 1am. Temperature rising to around 29 by 3am. Southwest wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.
Friday
Snow showers likely, mainly between 10am and 5pm. Cloudy, with a temperature rising to near 31 by 10am, then falling to around 21 during the remainder of the day. West wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 8. Wind chill values as low as -2. West wind 7 to 10 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.
Saturday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 17. Wind chill values as low as -2. Northwest wind 7 to 11 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around -1. Northwest wind 5 to 9 mph becoming light west after midnight. Winds could gust as high as 23 mph.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 16. Light southwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around -4. Northwest wind 8 to 10 mph, with gusts as high as 25 mph.
M.L.King Day
Partly sunny and cold, with a high near 4. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around -4. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Tuesday
Partly sunny, with a high near 16. Calm wind becoming southwest around 6 mph in the morning.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 7. Light southwest wind.
Wednesday
Partly sunny, with a high near 21. West wind 3 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 4. West wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 23. Calm wind becoming southwest around 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:
9:41 pm CST Jan 15, 2026
Forecast Valid:
10pm CST Jan 15, 2026-6pm CST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation