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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.

Light Unknown Precip

18°F

-8°C

Humidity 74%
Wind Speed NW 6 mph
Barometer 30.00 in (1017.9 mb)
Dewpoint 11°F (-12°C)
Visibility 6.00 mi
Wind Chill10°F (-12°C)
Last update 17 Jan 3:55 pm CST
Extended Forecast for

Sparta WI

Cold Weather Advisory January 19, 03:00am until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of snow, mainly before 5pm. Cloudy, with a high near 20. Northwest wind around 13 mph, with gusts as high as 24 mph.

    High: 20 °F

    Chance Snow

  • Tonight

    Tonight: Cloudy, with a low around 4. Wind chill values as low as -8. West wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 4 °F

    Cloudy

  • Sunday

    Sunday: Snow, mainly after noon. High near 17. Wind chill values as low as -8. Southwest wind 7 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 17 °F

    Chance Snow
    then Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly before 9pm. Mostly cloudy, with a low around -5. Wind chill values as low as -24. Blustery, with a northwest wind 9 to 18 mph, with gusts as high as 33 mph. New snow accumulation of less than a half inch possible.

    Low: -5 °F

    Blustery.
    Chance Snow
    then Mostly
    Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. Blustery, with a northwest wind 7 to 16 mph, with gusts as high as 29 mph.

    High: 4 °F

    Partly Sunny
    and Blustery
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -5. West wind around 6 mph becoming calm in the evening.

    Low: -5 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 17. Calm wind becoming southwest around 6 mph.

    High: 17 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 9. Calm wind becoming west around 5 mph after midnight.

    Low: 9 °F

    Chance Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow. Mostly cloudy, with a high near 20. West wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 20 °F

    Chance Snow

Detailed Forecast

This Afternoon
A 30 percent chance of snow, mainly before 5pm. Cloudy, with a high near 20. Northwest wind around 13 mph, with gusts as high as 24 mph.
Tonight
Cloudy, with a low around 4. Wind chill values as low as -8. West wind 7 to 11 mph, with gusts as high as 22 mph.
Sunday
Snow, mainly after noon. High near 17. Wind chill values as low as -8. Southwest wind 7 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 40 percent chance of snow, mainly before 9pm. Mostly cloudy, with a low around -5. Wind chill values as low as -24. Blustery, with a northwest wind 9 to 18 mph, with gusts as high as 33 mph. New snow accumulation of less than a half inch possible.
M.L.King Day
Partly sunny and cold, with a high near 4. Blustery, with a northwest wind 7 to 16 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around -5. West wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 17. Calm wind becoming southwest around 6 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 9. Calm wind becoming west around 5 mph after midnight.
Wednesday
A 30 percent chance of snow. Mostly cloudy, with a high near 20. West wind 5 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 1. West wind 3 to 6 mph. Winds could gust as high as 20 mph.
Thursday
Mostly sunny, with a high near 17. West wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 4. Light west wind.
Friday
Partly sunny, with a high near 16. Calm wind becoming northwest around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around -6. Light north wind.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 8. North wind 3 to 5 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:
3:21 pm CST Jan 17, 2026
Forecast Valid:
4pm CST Jan 17, 2026-6pm CST Jan 24, 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