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

30°F

-1°C

Humidity 34%
Wind Speed Calm
Barometer 30.42 in (1031.9 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 1 Mar 4:55 pm CST
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: Mostly clear, with a low around 12. Light and variable wind.

    Low: 12 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 41. South wind 3 to 8 mph. Winds could gust as high as 20 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27. Light south wind.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a high near 44. Light east wind.

    High: 44 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 45. Calm wind becoming east around 5 mph.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain. Mostly cloudy, with a high near 49. Calm wind becoming east around 5 mph.

    High: 49 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 34. Calm wind becoming southeast around 5 mph after midnight.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 12. Light and variable wind.
Monday
Sunny, with a high near 41. South wind 3 to 8 mph. Winds could gust as high as 20 mph.
Monday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27. Light south wind.
Tuesday
A 30 percent chance of rain, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a high near 44. Light east wind.
Tuesday Night
Partly cloudy, with a low around 26. Calm wind.
Wednesday
A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 45. Calm wind becoming east around 5 mph.
Wednesday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 30. Calm wind.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 49. Calm wind becoming east around 5 mph.
Thursday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 34. Calm wind becoming southeast around 5 mph after midnight.
Friday
Rain. High near 59. Southeast wind 5 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 28. West wind around 7 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny, with a high near 53. West wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 30. Southwest wind 5 to 7 mph.
Sunday
Sunny, with a high near 60. Southwest wind 7 to 11 mph, with gusts as high as 21 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:
5:21 pm CST Mar 1, 2026
Forecast Valid:
5pm CST Mar 1, 2026-6pm CDT Mar 8, 2026
 
Forecast Discussion
 
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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