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.

Fair

-3°F

-19°C

Humidity 83%
Wind Speed Calm
Barometer 30.33 in (1029.7 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Last update 31 Jan 11:55 pm CST
Extended Forecast for

Tomah WI

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 7. Wind chill values as low as -3. South wind 3 to 5 mph.

    Low: 7 °F

    Partly Cloudy

  • Sunday

    Sunday: Snow. High near 24. Wind chill values as low as -2. South wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 9pm. Mostly cloudy, with a low around 11. Southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 11 °F

    Snow Likely
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24. Northwest wind 3 to 7 mph.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 2. Calm wind.

    Low: 2 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 22. Light north wind.

    High: 22 °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 24. Light west wind.

    High: 24 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 10 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 7. Wind chill values as low as -3. South wind 3 to 5 mph.
Sunday
Snow. High near 24. Wind chill values as low as -2. South wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 11. Southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 24. Northwest wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 2. Calm wind.
Tuesday
Sunny, with a high near 22. Light north wind.
Tuesday Night
Partly cloudy, with a low around 0. Calm wind.
Wednesday
Mostly sunny, with a high near 24. Light west wind.
Wednesday Night
Mostly cloudy, with a low around 10. Light southwest wind.
Thursday
A 40 percent chance of snow after noon. Partly sunny, with a high near 35. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. West wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 31. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 2. North wind 3 to 6 mph.
Saturday
Partly sunny, with a high near 20. Light and variable wind becoming west around 6 mph in the morning.
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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:
12:16 am CST Feb 1, 2026
Forecast Valid:
12am CST Feb 1, 2026-6pm CST Feb 7, 2026
 
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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