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.

Fair

22°F

-6°C

Humidity 77%
Wind Speed Calm
Barometer 30.08 in (1020.2 mb)
Dewpoint 16°F (-9°C)
Visibility 9.00 mi
Last update 9 Feb 7:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Mostly cloudy, with a high near 40. South wind 3 to 7 mph.

    High: 40 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Calm wind becoming northwest 5 to 8 mph after midnight. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Northwest wind around 6 mph becoming calm after midnight. Winds could gust as high as 18 mph.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 37. Calm wind becoming northwest around 5 mph.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 39. Calm wind.

    High: 39 °F

    Chance Snow

  • Thursday Night

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

    Low: 21 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly sunny, with a high near 43. Calm wind becoming south around 5 mph.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 40. South wind 3 to 7 mph.
Tonight
Mostly cloudy, with a low around 28. Calm wind becoming northwest 5 to 8 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 38. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 20. Northwest wind around 6 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 37. Calm wind becoming northwest around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 19. Calm wind.
Thursday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 39. Calm wind.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21. Calm wind.
Friday
Mostly sunny, with a high near 43. Calm wind becoming south around 5 mph.
Friday Night
Partly cloudy, with a low around 24. Calm wind.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 43. Calm wind becoming south around 6 mph in the morning.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around 24. Light southeast wind.
Sunday
Mostly sunny, with a high near 44. Light southwest wind.
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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:
7:58 am CST Feb 9, 2026
Forecast Valid:
8am CST Feb 9, 2026-6pm CST Feb 15, 2026
 
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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