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

26°F

-3°C

Humidity 91%
Wind Speed Calm
Barometer 30.01 in (1017.8 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 14 Feb 8:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Sunny, with a high near 56. Calm wind becoming south around 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. Calm wind becoming south around 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:
5:56 am CST Feb 14, 2026
Forecast Valid:
9am CST Feb 14, 2026-6pm CST Feb 20, 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