National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

31°F

-1°C

Humidity 72%
Wind Speed SW 9 mph
Barometer 29.43 in (998.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 24 Feb 3:55 pm CST
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: Partly cloudy, with a low around 8. Wind chill values as low as -3. Breezy, with a west wind 11 to 17 mph, with gusts as high as 31 mph.

    Low: 8 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23. Wind chill values as low as -7. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 23 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 7. Calm wind.

    Low: 7 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 37. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 37 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23. Southwest wind around 6 mph.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 49. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 17. West wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: 17 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 27. Northwest wind 5 to 7 mph.

    High: 27 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 6. Light north wind.

    Low: 6 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 8. Wind chill values as low as -3. Breezy, with a west wind 11 to 17 mph, with gusts as high as 31 mph.
Wednesday
Mostly sunny, with a high near 23. Wind chill values as low as -7. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 7. Calm wind.
Thursday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 37. Calm wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 23. Southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 49. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 17. West wind 7 to 10 mph, with gusts as high as 23 mph.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 27. Northwest wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 6. Light north wind.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 25. East wind 3 to 5 mph.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 10. Calm wind.
Monday
Mostly sunny, with a high near 33. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18. Southeast wind around 6 mph.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 40. Southeast wind 5 to 7 mph becoming west in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
1:47 pm CST Feb 24, 2026
Forecast Valid:
4pm CST Feb 24, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation