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

27°F

-3°C

Humidity 82%
Wind Speed Calm
Barometer 30.30 in (1027.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 23 Mar 2:55 am CDT
Extended Forecast for

Tomah WI

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 47. Light northwest wind.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 31. Calm wind becoming south around 6 mph after midnight.

    Low: 31 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southwest wind 6 to 8 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. South wind 3 to 6 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 63. South wind around 7 mph.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Light south wind.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 61. South wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 61 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23. North wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 25. Calm wind.
Monday
Sunny, with a high near 47. Light northwest wind.
Monday Night
Increasing clouds, with a low around 31. Calm wind becoming south around 6 mph after midnight.
Tuesday
Partly sunny, with a high near 56. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 37. South wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 63. South wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 42. Light south wind.
Thursday
A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 61. South wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 23. North wind 6 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 43. North wind 6 to 9 mph.
Friday Night
Mostly clear, with a low around 23. West wind 5 to 7 mph.
Saturday
Sunny, with a high near 50. West wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 30. Southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 59. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
1:26 am CDT Mar 23, 2026
Forecast Valid:
3am CDT Mar 23, 2026-6pm CDT Mar 29, 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