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

46°F

8°C

Humidity 97%
Wind Speed Calm
Barometer 29.79 in (1009.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 7 Oct 2:55 am CDT
Extended Forecast for

Sparta WI

  • Overnight

    Overnight: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72. Light northwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 45. West wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 66. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 66 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. South wind 3 to 5 mph. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Breezy, with a south wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 81 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. South wind 6 to 13 mph, with gusts as high as 28 mph.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 50. Calm wind.
Wednesday
Sunny, with a high near 72. Light northwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Increasing clouds, with a low around 45. West wind around 5 mph becoming calm in the evening.
Thursday
Increasing clouds, with a high near 66. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 42. Calm wind.
Friday
Mostly sunny, with a high near 72. Calm wind becoming south 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 57. South wind 3 to 5 mph. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 81. Breezy, with a south wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Mostly clear, with a low around 61. South wind 6 to 13 mph, with gusts as high as 28 mph.
Sunday
Sunny, with a high near 79. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind 3 to 5 mph.
Columbus Day
A 30 percent chance of showers. Partly sunny, with a high near 70. Southwest wind 3 to 8 mph.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 47. North wind 3 to 5 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 62. North wind 5 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 90.84°W
Last Update:
1:26 am CDT Oct 7, 2026
Forecast Valid:
3am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

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Chance of Precipitation