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 81%
Wind Speed W 15 mph
Barometer 29.50 in (1000.3 mb)
Dewpoint 26°F (-3°C)
Visibility 8.00 mi
Wind Chill20°F (-7°C)
Last update 16 Jan 4:55 pm CST
Extended Forecast for

Tomah WI

  • This Afternoon

    This Afternoon: A 50 percent chance of snow. Cloudy, with a steady temperature around 29. West wind around 15 mph, with gusts as high as 25 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 29 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly after 9pm. Cloudy, with a low around 11. Wind chill values as low as -1. West wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 11 °F

    Snow Likely

  • Saturday

    Saturday: Snow likely before noon, then a chance of flurries between noon and 3pm. Cloudy, with a high near 18. Wind chill values as low as -1. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Snow Likely
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 0. Wind chill values as low as -10. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 0 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow likely, mainly after noon. Mostly cloudy, with a high near 17. Southwest wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 17 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -7. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: -7 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 3. Breezy, with a west wind 10 to 16 mph, with gusts as high as 29 mph.

    High: 3 °F

    Cold and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around -5. West wind 5 to 8 mph, with gusts as high as 21 mph.

    Low: -5 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 14. West wind 3 to 7 mph.

    High: 14 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of snow. Cloudy, with a steady temperature around 29. West wind around 15 mph, with gusts as high as 25 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly after 9pm. Cloudy, with a low around 11. Wind chill values as low as -1. West wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Snow likely before noon, then a chance of flurries between noon and 3pm. Cloudy, with a high near 18. Wind chill values as low as -1. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 0. Wind chill values as low as -10. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.
Sunday
Snow likely, mainly after noon. Mostly cloudy, with a high near 17. Southwest wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
Mostly cloudy, with a low around -7. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
M.L.King Day
Partly sunny and cold, with a high near 3. Breezy, with a west wind 10 to 16 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around -5. West wind 5 to 8 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 14. West wind 3 to 7 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 5. Calm wind becoming west around 5 mph after midnight.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 20. West wind 5 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 3. Northwest wind around 5 mph.
Thursday
Partly sunny, with a high near 15. Northwest wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 2. Light and variable wind.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 20. Light and variable wind becoming southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
5:21 pm CST Jan 16, 2026
Forecast Valid:
5pm CST Jan 16, 2026-6pm CST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation