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

37°F

3°C

Humidity 64%
Wind Speed Calm
Barometer 30.28 in (1027.0 mb)
Dewpoint 26°F (-3°C)
Visibility 7.00 mi
Last update 14 Nov 4:55 pm CST
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Light west wind.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 51. Calm wind.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. Light southwest wind.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33. Southwest wind around 6 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58. South wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 58 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. South wind around 7 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. South wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 46. South wind around 8 mph, with gusts as high as 23 mph.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 21. Light west wind.
Sunday
Sunny, with a high near 51. Calm wind.
Sunday Night
Mostly clear, with a low around 24. Light southwest wind.
Monday
Sunny, with a high near 54. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 33. Southwest wind around 6 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 58. South wind 5 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
Partly cloudy, with a low around 38. South wind around 7 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 58. South wind 7 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 46. South wind around 8 mph, with gusts as high as 23 mph.
Thursday
A 30 percent chance of rain before noon. Partly sunny, with a high near 59. Southwest wind 5 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly cloudy, with a low around 39. Calm wind.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 59. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
Rain likely. Mostly cloudy, with a low around 46. Southeast wind 3 to 8 mph. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 62. South wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
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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 Nov 14, 2026
Forecast Valid:
5pm CST Nov 14, 2026-6pm CST Nov 21, 2026
 
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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