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

26°F

-3°C

Humidity 58%
Wind Speed W 5 mph
Barometer 30.09 in (1020.6 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 2 Feb 2:55 pm CST
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 3. Northwest wind 3 to 6 mph.

    Low: 3 °F

    Mostly Cloudy

  • Tuesday

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

    High: 23 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 0. Calm wind.

    Low: 0 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23. Calm wind becoming west around 5 mph.

    High: 23 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10. Light and variable wind.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 35. Light southwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 35 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. Northwest wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 35. Northwest wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 5. North wind around 6 mph becoming calm in the evening.

    Low: 5 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 3. Northwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 23. Wind chill values as low as -3. North wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 0. Calm wind.
Wednesday
Mostly sunny, with a high near 23. Calm wind becoming west around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 10. Light and variable wind.
Thursday
Partly sunny, with a high near 35. Light southwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 25. Northwest wind 6 to 10 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 35. Northwest wind 7 to 13 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 5. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 24. Calm wind becoming south around 6 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 11. Light and variable wind.
Sunday
Mostly sunny, with a high near 30. Calm wind becoming west around 5 mph.
Sunday Night
Partly cloudy, with a low around 14. Light south wind.
Monday
Mostly sunny, with a high near 35. 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:
1:27 pm CST Feb 2, 2026
Forecast Valid:
3pm CST Feb 2, 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