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

58°F

14°C

Humidity 56%
Wind Speed Calm
Barometer 29.88 in (1012.5 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 20 Mar 4:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. Calm wind becoming northeast around 5 mph after midnight.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 48. North wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 48 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24. North wind around 6 mph becoming calm in the evening.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49. Light and variable wind.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34. Calm wind becoming south around 5 mph after midnight.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. South wind 5 to 8 mph becoming west in the afternoon.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 31. Northwest wind around 5 mph becoming light and variable after midnight.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. Calm wind.
Saturday
Mostly sunny, with a high near 76. Calm wind becoming southwest 5 to 9 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 41. Calm wind becoming northeast around 5 mph after midnight.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 48. North wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 24. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 49. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 34. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 56. South wind 5 to 8 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 31. Northwest wind around 5 mph becoming light and variable after midnight.
Wednesday
Mostly cloudy, with a high near 50. Southeast wind 5 to 7 mph.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 38. South wind 5 to 7 mph, with gusts as high as 18 mph.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 57. West wind 7 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 22. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 42. Northwest wind 7 to 9 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.95°N 90.81°W
Last Update:
3:52 pm CDT Mar 20, 2026
Forecast Valid:
5pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation