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

16°F

-9°C

Humidity 40%
Wind Speed N 12 G 17 mph
Barometer 30.50 in (1035.1 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 30 Jan 1:55 pm CST
Extended Forecast for

Tomah WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 14. North wind around 8 mph.

    High: 14 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around -1. Wind chill values as low as -9. Northwest wind 5 to 7 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 21. Wind chill values as low as -9. Northwest wind around 5 mph becoming calm in the morning.

    High: 21 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3. Calm wind becoming south around 5 mph after midnight.

    Low: 3 °F

    Partly Cloudy

  • Sunday

    Sunday: Snow likely. Partly sunny, with a high near 24. South wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 24 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 12. Light and variable wind.

    Low: 12 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 26. Northwest wind 3 to 6 mph.

    High: 26 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 9. Calm wind.

    Low: 9 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. Light northeast wind.

    High: 26 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 14. North wind around 8 mph.
Tonight
Mostly cloudy, with a low around -1. Wind chill values as low as -9. Northwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 21. Wind chill values as low as -9. Northwest wind around 5 mph becoming calm in the morning.
Saturday Night
Partly cloudy, with a low around 3. Calm wind becoming south around 5 mph after midnight.
Sunday
Snow likely. Partly sunny, with a high near 24. South wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 12. Light and variable wind.
Monday
Mostly sunny, with a high near 26. Northwest wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 9. Calm wind.
Tuesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. Light northeast wind.
Tuesday Night
Partly cloudy, with a low around 6. Calm wind.
Wednesday
Mostly sunny, with a high near 25. Light and variable wind.
Wednesday Night
Mostly cloudy, with a low around 11. Light west wind.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 31. Southwest wind 3 to 8 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:
2:07 pm CST Jan 30, 2026
Forecast Valid:
2pm CST Jan 30, 2026-6pm CST Feb 5, 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