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

47°F

8°C

Humidity 56%
Wind Speed Calm
Barometer 29.98 in (1016.4 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 14 Feb 10:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Sunny, with a high near 56. Southwest wind 3 to 6 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °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 36. Calm wind becoming south around 5 mph after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 59. Southwest wind around 6 mph becoming light and variable in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. Light and variable wind.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 51. Light east wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 38. East wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before noon. Partly sunny, with a high near 50. Southeast wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 50 °F

    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 56. Southwest wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 25. Calm wind.
Sunday
Sunny, with a high near 52. Calm wind.
Sunday Night
Mostly cloudy, with a low around 36. Calm wind becoming south around 5 mph after midnight.
Washington's Birthday
Mostly sunny, with a high near 59. Southwest wind around 6 mph becoming light and variable in the afternoon.
Monday Night
Partly cloudy, with a low around 35. Light and variable wind.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 51. Light east wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Rain. Low around 38. East wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday
Rain likely, mainly before noon. Partly sunny, with a high near 50. Southeast wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Wednesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 26. West wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 40. Light north wind becoming northeast 5 to 9 mph in the morning.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 23. Northeast wind 5 to 7 mph.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 35. Northwest wind 5 to 7 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:
9:06 am CST Feb 14, 2026
Forecast Valid:
11am CST Feb 14, 2026-6pm CST Feb 20, 2026
 
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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