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.

Overcast

21°F

-6°C

Humidity 46%
Wind Speed Calm
Barometer 30.37 in (1030.5 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Last update 7 Feb 12:55 pm CST
Extended Forecast for

Tomah WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 24. Southeast wind 3 to 6 mph.

    High: 24 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of flurries with a slight chance of snow before 2am, then a chance of flurries after 3am. Mostly cloudy, with a low around 14. Southeast wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 14 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32. Southeast wind 5 to 8 mph, with gusts as high as 18 mph.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19. South wind 3 to 5 mph.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 42. South wind 3 to 7 mph.

    High: 42 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. Calm wind becoming northwest around 6 mph after midnight.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 39. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 39 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 17. Northwest wind around 6 mph becoming calm in the evening.

    Low: 17 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37. Calm wind becoming northwest around 5 mph.

    High: 37 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 24. Southeast wind 3 to 6 mph.
Tonight
A chance of flurries with a slight chance of snow before 2am, then a chance of flurries after 3am. Mostly cloudy, with a low around 14. Southeast wind 3 to 6 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 32. Southeast wind 5 to 8 mph, with gusts as high as 18 mph.
Sunday Night
Mostly cloudy, with a low around 19. South wind 3 to 5 mph.
Monday
Partly sunny, with a high near 42. South wind 3 to 7 mph.
Monday Night
Mostly cloudy, with a low around 27. Calm wind becoming northwest around 6 mph after midnight.
Tuesday
Partly sunny, with a high near 39. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 17. Northwest wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 37. Calm wind becoming northwest around 5 mph.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 20. Calm wind.
Thursday
A 20 percent chance of snow. Partly sunny, with a high near 38. Calm wind becoming northeast around 5 mph.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18. Light and variable wind.
Friday
Sunny, with a high near 39. Calm wind becoming southeast around 5 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:
1:42 pm CST Feb 7, 2026
Forecast Valid:
1pm CST Feb 7, 2026-6pm CST Feb 13, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation