National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Partly Cloudy

22°F

-6°C

Humidity 48%
Wind Speed Calm
Barometer 30.28 in (1027.3 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 7 Feb 9:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: A chance of flurries before 2am, then a chance of flurries after 5am. Mostly cloudy, with a steady temperature around 20. Calm wind becoming southeast around 5 mph after midnight.

    Low: 20 °F

    Chance
    Flurries

  • Sunday

    Sunday: Mostly sunny, with a high near 34. Southeast wind around 6 mph becoming calm in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 44. Calm wind becoming south around 6 mph.

    High: 44 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Light and variable wind.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40. Northwest wind 3 to 8 mph.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18. Northwest wind around 5 mph becoming calm in the evening.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. Calm wind.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
A chance of flurries before 2am, then a chance of flurries after 5am. Mostly cloudy, with a steady temperature around 20. Calm wind becoming southeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 34. Southeast wind around 6 mph becoming calm in the afternoon.
Sunday Night
Mostly cloudy, with a low around 21. Calm wind.
Monday
Partly sunny, with a high near 44. Calm wind becoming south around 6 mph.
Monday Night
Mostly cloudy, with a low around 28. Light and variable wind.
Tuesday
Partly sunny, with a high near 40. Northwest wind 3 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 18. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 38. Calm wind.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21. Calm wind.
Thursday
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 39. Light and variable wind.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 20. Calm wind.
Friday
Sunny, with a high near 40. Light southeast wind.
Friday Night
Mostly clear, with a low around 21. Calm wind.
Saturday
Mostly sunny, with a high near 41. Calm wind becoming south around 5 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
10:52 pm CST Feb 7, 2026
Forecast Valid:
11pm CST Feb 7, 2026-6pm CST Feb 14, 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