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.

Partly Cloudy

13°F

-11°C

Humidity 72%
Wind Speed Calm
Barometer 29.96 in (1016.7 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 15 Jan 9:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Snow likely, mainly after 4pm. Mostly cloudy, with a high near 24. Light south wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 24 °F

    Partly Sunny
    then Snow
    Likely

  • Tonight

    Tonight: A chance of snow and freezing rain before 10pm, then snow likely. Cloudy, with a temperature rising to around 32 by 5am. Southwest wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F⇑

    Chance Wintry
    Mix then Snow
    Likely

  • Friday

    Friday: Snow showers likely, mainly before 4pm. Mostly cloudy, with a temperature rising to near 33 by 10am, then falling to around 23 during the remainder of the day. West wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 33 °F⇓

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 9. Wind chill values as low as -1. Northwest wind 7 to 13 mph, with gusts as high as 26 mph.

    Low: 9 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 17. Northwest wind 7 to 11 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.

    High: 17 °F

    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: A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 14. Southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 14 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -2. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: -2 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 6. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 6 °F

    Partly Sunny

Detailed Forecast

Today
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 24. Light south wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A chance of snow and freezing rain before 10pm, then snow likely. Cloudy, with a temperature rising to around 32 by 5am. Southwest wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of 1 to 3 inches possible.
Friday
Snow showers likely, mainly before 4pm. Mostly cloudy, with a temperature rising to near 33 by 10am, then falling to around 23 during the remainder of the day. West wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 9. Wind chill values as low as -1. Northwest wind 7 to 13 mph, with gusts as high as 26 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 17. 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
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 14. Southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.
Sunday Night
Mostly cloudy, with a low around -2. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.
M.L.King Day
Partly sunny, with a high near 6. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, with a low around -5. West wind 3 to 6 mph. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 14. West wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 4. Light south wind.
Wednesday
Partly sunny, with a high near 21. West wind 3 to 7 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:
8:47 am CST Jan 15, 2026
Forecast Valid:
10am CST Jan 15, 2026-6pm CST Jan 21, 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