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

39°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 30.39 in (1029.8 mb)
Dewpoint 39°F (4°C)
Visibility 9.00 mi
Last update 23 Sep 1:55 am CDT
Extended Forecast for

4 Miles S Sparta WI

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Calm wind becoming east around 6 mph in the morning.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 67. Light southeast wind.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 64. Southeast wind 3 to 8 mph.

    High: 64 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 44. Calm wind.
Wednesday
Sunny, with a high near 65. Calm wind becoming east around 6 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 46. Calm wind.
Thursday
Partly sunny, with a high near 67. Light southeast wind.
Thursday Night
Mostly cloudy, with a low around 50. Calm wind.
Friday
Partly sunny, with a high near 69. Light and variable wind.
Friday Night
Mostly cloudy, with a low around 49. Calm wind.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 64. Southeast wind 3 to 8 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 68. Calm wind.
Sunday Night
Mostly cloudy, with a low around 52. Calm wind.
Monday
Partly sunny, with a high near 73. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56. Light south wind.
Tuesday
Showers likely. Partly sunny, with a high near 69. Light south wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Sparta WI
 43.89°N 90.82°W
Last Update:
1:26 am CDT Sep 23, 2026
Forecast Valid:
2am CDT Sep 23, 2026-6pm CDT Sep 29, 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