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

15°F

-9°C

Humidity 92%
Wind Speed Calm
Barometer 30.27 in (1026.8 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Last update 14 Nov 5:55 am CST
Extended Forecast for

Tomah WI

  • Today

    Today: Sunny, with a high near 46. Calm wind.

    High: 46 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 19. Calm wind.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 50. Calm wind.

    High: 50 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 22. Calm wind.

    Low: 22 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 53. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30. Southwest wind around 6 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. South wind 5 to 10 mph, with gusts as high as 22 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. South wind around 8 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. South wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 58 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 46. Calm wind.
Tonight
Mostly clear, with a low around 19. Calm wind.
Sunday
Sunny, with a high near 50. Calm wind.
Sunday Night
Clear, with a low around 22. Calm wind.
Monday
Sunny, with a high near 53. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 30. Southwest wind around 6 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 57. South wind 5 to 10 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 35. South wind around 8 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 58. South wind 8 to 13 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly cloudy, with a low around 44. South wind around 9 mph, with gusts as high as 24 mph.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 60. West wind 6 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 40. Light and variable wind.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 59. Calm wind becoming south around 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.97°N 90.51°W
Last Update:
5:11 am CST Nov 14, 2026
Forecast Valid:
6am CST Nov 14, 2026-6pm CST Nov 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation