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

50°F

10°C

Humidity 96%
Wind Speed Calm
Barometer 30.34 in (1028.1 mb)
Dewpoint 49°F (9°C)
Visibility 9.00 mi
Last update 22 Sep 7:55 pm CDT
Extended Forecast for

2 Miles NNW Tomah WI

  • Tonight

    Tonight: Mostly clear, with a low around 41. Light northeast wind.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy frost before 8am. Otherwise, sunny, with a high near 64. Calm wind becoming east 5 to 7 mph in the morning.

    High: 64 °F

    Patchy Frost
    then Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 67 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 48. Southeast wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Light northeast wind.
Wednesday
Patchy frost before 8am. Otherwise, sunny, with a high near 64. Calm wind becoming east 5 to 7 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 42. Calm wind.
Thursday
Mostly cloudy, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 46. Calm wind.
Friday
Partly sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 45. Calm wind.
Saturday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. Calm wind becoming southeast 5 to 8 mph in the morning.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 48. Southeast wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 68. Light south wind.
Sunday Night
Mostly cloudy, with a low around 51. Calm wind.
Monday
Partly sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54. Calm wind.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 69. Light south wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Tomah WI
 44.01°N 90.51°W
Last Update:
6:36 pm CDT Sep 22, 2026
Forecast Valid:
8pm CDT Sep 22, 2026-6pm CDT Sep 29, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation