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Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast with Haze

15°F

-9°C

Humidity 78%
Wind Speed W 3 mph
Barometer 29.91 in (1014.8 mb)
Dewpoint 9°F (-13°C)
Visibility 3.00 mi
Last update 17 Jan 9:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Snow, mainly before noon. High near 21. Northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 21 °F

    Snow then
    Slight Chance
    Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 2. Wind chill values as low as -7. Northwest wind 5 to 9 mph, with gusts as high as 22 mph.

    Low: 2 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow. High near 17. Wind chill values as low as -4. Light southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 17 °F

    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -5. Wind chill values as low as -21. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 28 mph.

    Low: -5 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. West wind 7 to 13 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 3 to 6 mph. Winds could gust as high as 20 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 17. Southwest wind 3 to 6 mph.

    High: 17 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 10. Light and variable wind.

    Low: 10 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 20. West wind 3 to 8 mph.

    High: 20 °F

    Slight Chance
    Snow then
    Partly Sunny

Detailed Forecast

Today
Snow, mainly before noon. High near 21. Northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly cloudy, with a low around 2. Wind chill values as low as -7. Northwest wind 5 to 9 mph, with gusts as high as 22 mph.
Sunday
Snow. High near 17. Wind chill values as low as -4. Light southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Sunday Night
Mostly cloudy, with a low around -5. Wind chill values as low as -21. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 28 mph.
M.L.King Day
Partly sunny and cold, with a high near 4. West wind 7 to 13 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around -4. West wind 3 to 6 mph. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 17. Southwest wind 3 to 6 mph.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 10. Light and variable wind.
Wednesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 20. West wind 3 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 3. West wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 14. Calm wind becoming west around 6 mph.
Thursday Night
Mostly cloudy, with a low around -1. Light west wind.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 15. Light and variable wind becoming west around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
9:41 am CST Jan 17, 2026
Forecast Valid:
10am CST Jan 17, 2026-6pm CST Jan 23, 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