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.

Fair

26°F

-3°C

Humidity 54%
Wind Speed Calm
Barometer 30.62 in (1038.3 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 27 Mar 11:55 pm CDT
Extended Forecast for

Tomah WI

  • Overnight

    Overnight: Clear, with a low around 17. Northwest wind around 5 mph becoming calm.

    Low: 17 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 52. Breezy, with a light southwest wind increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.

    High: 52 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. Southwest wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65. Southwest wind around 7 mph.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. Light and variable wind.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. South wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers. Partly sunny, with a high near 64. Southwest wind 8 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 64 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain showers before 1am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 29. North wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

Overnight
Clear, with a low around 17. Northwest wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 52. Breezy, with a light southwest wind increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 35. Southwest wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 65. Southwest wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 39. Light and variable wind.
Monday
Mostly sunny, with a high near 72. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. South wind 7 to 9 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers. Partly sunny, with a high near 64. Southwest wind 8 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
A chance of rain showers before 1am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 29. North wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday
A 20 percent chance of snow showers after 1pm. Mostly sunny, with a high near 48. Northeast wind 7 to 9 mph.
Wednesday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 27. East wind 7 to 9 mph, with gusts as high as 20 mph.
Thursday
A chance of rain and snow showers. Mostly sunny, with a high near 48. East wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of rain and snow showers. Partly cloudy, with a low around 31. East wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 56. Southeast wind 7 to 11 mph, with gusts as high as 21 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
9:16 pm CDT Mar 27, 2026
Forecast Valid:
12am CDT Mar 28, 2026-6pm CDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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