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

34°F

1°C

Humidity 77%
Wind Speed W 13 mph
Barometer 29.43 in (997.8 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 16 Jan 10:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: A 50 percent chance of snow. Cloudy, with a temperature falling to around 28 by 5pm. West wind 10 to 15 mph, with gusts as high as 25 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 36 °F⇓

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly after 8pm. Cloudy, with a low around 10. Northwest wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 10 °F

    Snow Likely

  • Saturday

    Saturday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 18. Wind chill values as low as -3. Northwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Snow Likely
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1. Wind chill values as low as -8. 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

  • Tuesday

    Tuesday: A 20 percent chance of snow after noon. Partly sunny, with a high near 14. Calm wind becoming west around 5 mph.

    High: 14 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Today
A 50 percent chance of snow. Cloudy, with a temperature falling to around 28 by 5pm. West wind 10 to 15 mph, with gusts as high as 25 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly after 8pm. Cloudy, with a low around 10. Northwest wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 18. Wind chill values as low as -3. Northwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around -1. Wind chill values as low as -8. 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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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
10:52 am CST Jan 16, 2026
Forecast Valid:
11am CST Jan 16, 2026-6pm CST Jan 22, 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