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

87°F

31°C

Humidity 47%
Wind Speed Calm
Barometer 30.05 in (1017.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Oct 3:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind 3 to 5 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 90 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South wind around 11 mph, with gusts as high as 26 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Breezy, with a south wind 11 to 18 mph, with gusts as high as 32 mph.

    High: 83 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. South wind 5 to 9 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers. Partly sunny, with a high near 68. Northwest wind 3 to 7 mph.

    High: 68 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 67. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South wind 3 to 5 mph.
Saturday
Sunny, with a high near 90. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Mostly clear, with a low around 63. South wind around 11 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 83. Breezy, with a south wind 11 to 18 mph, with gusts as high as 32 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. South wind 5 to 9 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 68. Northwest wind 3 to 7 mph.
Monday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 67. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 38. Calm wind.
Wednesday
Sunny, with a high near 66. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 40. Light southeast wind.
Thursday
Sunny, with a high near 68. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 47. South wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 69. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
1:43 pm CDT Oct 3, 2025
Forecast Valid:
4pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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