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

22°F

-6°C

Humidity 55%
Wind Speed Calm
Barometer 30.27 in (1027.1 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 3 Feb 1:55 pm CST
Extended Forecast for

Tomah WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 22. North wind 3 to 5 mph.

    High: 22 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 2. Light and variable wind.

    Low: 2 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 23. Wind chill values as low as -3. Northwest wind 3 to 6 mph.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Light and variable wind.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 35. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 35 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27. West wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 37. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 37 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 9. North wind around 6 mph becoming calm in the evening.

    Low: 9 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27. Calm wind becoming south around 6 mph in the morning.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 22. North wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 2. Light and variable wind.
Wednesday
Sunny, with a high near 23. Wind chill values as low as -3. Northwest wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 9. Light and variable wind.
Thursday
Partly sunny, with a high near 35. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 27. West wind 6 to 9 mph, with gusts as high as 21 mph.
Friday
Partly sunny, with a high near 37. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 9. North wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 27. Calm wind becoming south around 6 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 12. Light east wind.
Sunday
Partly sunny, with a high near 29. Calm wind becoming east around 5 mph.
Sunday Night
Mostly cloudy, with a low around 14. Light south wind.
Monday
Mostly sunny, with a high near 36. South wind 3 to 7 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:
11:11 am CST Feb 3, 2026
Forecast Valid:
2pm CST Feb 3, 2026-6pm CST Feb 9, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation