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.

A Few Clouds

28°F

-2°C

Humidity 62%
Wind Speed Calm
Barometer 30.32 in (1028.2 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 23 Mar 8:55 pm CDT
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 35. South wind 5 to 9 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southwest wind 6 to 10 mph, with gusts as high as 24 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Calm wind becoming south around 6 mph after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. South wind around 7 mph.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. Light south wind.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 61. West wind 5 to 11 mph becoming north in the morning. Winds could gust as high as 20 mph.

    High: 61 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 22. North wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 22 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. North wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 22. Northwest wind around 7 mph, with gusts as high as 18 mph.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 35. South wind 5 to 9 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 56. Southwest wind 6 to 10 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 66. South wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 45. Light south wind.
Thursday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 61. West wind 5 to 11 mph becoming north in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 22. North wind 6 to 10 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 43. North wind 5 to 10 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 22. Northwest wind around 7 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 52. West wind 6 to 13 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 31. Southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 59. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 34. Southwest wind around 6 mph becoming south after midnight.
Monday
Mostly sunny, with a high near 60. South wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
5:36 pm CDT Mar 23, 2026
Forecast Valid:
9pm CDT Mar 23, 2026-6pm CDT Mar 30, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation