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.

Fair

-1°F

-18°C

Humidity 84%
Wind Speed Calm
Barometer 30.35 in (1030.4 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Last update 31 Jan 10:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Increasing clouds, with a low around 5. Calm wind becoming south around 5 mph after midnight.

    Low: 5 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Snow. High near 25. Wind chill values as low as zero. South wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 25 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely before midnight. Mostly cloudy, with a low around 13. Light and variable wind becoming northwest 5 to 7 mph in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Snow Likely
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 25. Northwest wind 3 to 6 mph.

    High: 25 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 2. Calm wind.

    Low: 2 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 22. Calm wind.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 0. Calm wind.

    Low: 0 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25. Calm wind.

    High: 25 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 5. Calm wind becoming south around 5 mph after midnight.
Sunday
Snow. High near 25. Wind chill values as low as zero. South wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Sunday Night
Snow likely before midnight. Mostly cloudy, with a low around 13. Light and variable wind becoming northwest 5 to 7 mph in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 25. Northwest wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 2. Calm wind.
Tuesday
Sunny, with a high near 22. Calm wind.
Tuesday Night
Partly cloudy, with a low around 0. Calm wind.
Wednesday
Mostly sunny, with a high near 25. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 11. Calm wind.
Thursday
A 40 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 35. Calm wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Southwest wind 5 to 7 mph becoming northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 33. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 5. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 21. Calm wind becoming northeast around 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:
11:02 pm CST Jan 31, 2026
Forecast Valid:
11pm CST Jan 31, 2026-6pm CST Feb 7, 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