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

22°F

-6°C

Humidity 61%
Wind Speed NW 10 mph
Barometer 30.21 in (1024.9 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 21 Feb 6:55 pm CST
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: A chance of flurries. Mostly cloudy, with a low around 10. Wind chill values as low as -3. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 10 °F

    Chance
    Flurries

  • Sunday

    Sunday: A chance of flurries before 4pm. Partly sunny, with a high near 22. Wind chill values as low as -5. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 22 °F

    Chance
    Flurries and
    Blustery

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 6. Wind chill values as low as -4. Northwest wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 6 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24. Wind chill values as low as -4. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Calm wind becoming south around 6 mph after midnight.

    Low: 10 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of snow. Partly sunny, with a high near 35. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 16. Northwest wind around 6 mph.

    Low: 16 °F

    Slight Chance
    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 30. West wind 6 to 8 mph.

    High: 30 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow. Partly cloudy, with a low around 10. West wind around 6 mph.

    Low: 10 °F

    Chance Snow

Detailed Forecast

Tonight
A chance of flurries. Mostly cloudy, with a low around 10. Wind chill values as low as -3. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday
A chance of flurries before 4pm. Partly sunny, with a high near 22. Wind chill values as low as -5. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 6. Wind chill values as low as -4. Northwest wind 6 to 10 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 24. Wind chill values as low as -4. Northwest wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 10. Calm wind becoming south around 6 mph after midnight.
Tuesday
A 50 percent chance of snow. Partly sunny, with a high near 35. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 16. Northwest wind around 6 mph.
Wednesday
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 30. West wind 6 to 8 mph.
Wednesday Night
A 30 percent chance of snow. Partly cloudy, with a low around 10. West wind around 6 mph.
Thursday
A 30 percent chance of snow, mainly before noon. Mostly sunny, with a high near 34. West wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 19. Southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 46. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 21. West wind around 8 mph, with gusts as high as 18 mph.
Saturday
A 20 percent chance of snow. Mostly sunny, with a high near 35. Northwest wind 8 to 11 mph, with gusts as high as 22 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:
3:56 pm CST Feb 21, 2026
Forecast Valid:
7pm CST Feb 21, 2026-6pm CST Feb 28, 2026
 
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Additional Resources

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