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

36°F

2°C

Humidity 58%
Wind Speed Calm
Barometer 30.16 in (1022.7 mb)
Dewpoint 22°F (-6°C)
Visibility 8.00 mi
Last update 12 Feb 5:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Clear, with a low around 26. Calm wind.

    Low: 26 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 51. Light and variable wind.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 53. Light south wind.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. Calm wind.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 58. Calm wind becoming southwest around 6 mph.

    High: 58 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 26. Calm wind.
Friday
Sunny, with a high near 51. Light and variable wind.
Friday Night
Partly cloudy, with a low around 28. Calm wind.
Saturday
Mostly sunny, with a high near 53. Light south wind.
Saturday Night
Mostly clear, with a low around 28. Calm wind.
Sunday
Sunny, with a high near 52. Calm wind.
Sunday Night
Mostly cloudy, with a low around 33. Calm wind.
Washington's Birthday
Partly sunny, with a high near 58. Calm wind becoming southwest around 6 mph.
Monday Night
Partly cloudy, with a low around 37. Calm wind.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 55. Calm wind becoming southeast 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 39. Southeast wind around 7 mph, with gusts as high as 18 mph.
Wednesday
A 50 percent chance of rain. Mostly sunny, with a high near 50. Southeast wind 7 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Northwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 39. Northwest wind 6 to 9 mph. Chance of precipitation is 20%.
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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:
5:21 pm CST Feb 12, 2026
Forecast Valid:
6pm CST Feb 12, 2026-6pm CST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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