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.

Light Unknown Precip Fog/Mist

26°F

-3°C

Humidity 92%
Wind Speed Calm
Barometer 29.40 in (997.0 mb)
Dewpoint 24°F (-4°C)
Visibility 6.00 mi
Last update 16 Jan 3:55 am CST
Extended Forecast for

Sparta WI

  • Overnight

    Overnight: Snow. Steady temperature around 29. Southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow

  • Friday

    Friday: Snow likely, mainly before 7am. Cloudy, with a temperature rising to near 34 by 11am, then falling to around 23 during the remainder of the day. West wind 7 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 34 °F⇓

    Snow Likely

  • Friday Night

    Friday Night: A 40 percent chance of snow. Cloudy, with a low around 11. Wind chill values as low as zero. West wind 8 to 13 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.

    Low: 11 °F

    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 18. Wind chill values as low as -2. Northwest wind 7 to 11 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1. Northwest wind 3 to 8 mph. Winds could gust as high as 22 mph.

    Low: -1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow likely, mainly after noon. Mostly cloudy, with a high near 17. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 17 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -5. Northwest wind 9 to 11 mph, with gusts as high as 28 mph.

    Low: -5 °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 25 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

Overnight
Snow. Steady temperature around 29. Southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.
Friday
Snow likely, mainly before 7am. Cloudy, with a temperature rising to near 34 by 11am, then falling to around 23 during the remainder of the day. West wind 7 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
A 40 percent chance of snow. Cloudy, with a low around 11. Wind chill values as low as zero. West wind 8 to 13 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.
Saturday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 18. Wind chill values as low as -2. Northwest wind 7 to 11 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around -1. Northwest wind 3 to 8 mph. Winds could gust as high as 22 mph.
Sunday
Snow likely, mainly after noon. Mostly cloudy, with a high near 17. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday Night
Mostly cloudy, with a low around -5. Northwest wind 9 to 11 mph, with gusts as high as 28 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 25 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
A 20 percent chance of snow after noon. Partly sunny, with a high near 14. Calm wind becoming west around 5 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 5. Calm wind.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 23. Calm wind becoming west 5 to 7 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 7. West wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 20. Calm wind becoming northwest around 6 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
3:06 am CST Jan 16, 2026
Forecast Valid:
4am CST Jan 16, 2026-6pm CST Jan 22, 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