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 96%
Wind Speed Calm
Barometer 30.35 in (1028.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 19 Oct 10:55 pm CDT
Extended Forecast for

Tomah WI

  • Overnight

    Overnight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. Light south wind.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Sunny

  • Thursday Night

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

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 68. Calm wind becoming south 5 to 9 mph in the morning.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52. South wind around 7 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 40. Calm wind.
Tuesday
Patchy fog before 11am. Otherwise, sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 42. Calm wind.
Wednesday
Sunny, with a high near 70. Light south wind.
Wednesday Night
Partly cloudy, with a low around 45. Calm wind.
Thursday
Sunny, with a high near 71. Light and variable wind.
Thursday Night
Mostly clear, with a low around 46. Calm wind.
Friday
Mostly sunny, with a high near 68. Calm wind becoming south 5 to 9 mph in the morning.
Friday Night
Mostly cloudy, with a low around 52. South wind around 7 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 68. South wind 8 to 13 mph, with gusts as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 52. South wind 5 to 7 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 66. West wind 3 to 8 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 44. Light west wind.
Monday
Mostly sunny, with a high near 59. Calm wind becoming northwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.97°N 90.51°W
Last Update:
11:06 pm CDT Oct 19, 2026
Forecast Valid:
12am CDT Oct 20, 2026-6pm CDT Oct 26, 2026
 
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Additional Resources

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Chance of Precipitation