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

60°F

16°C

Humidity 76%
Wind Speed W 3 mph
Barometer 29.81 in (1009.6 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 13 Oct 7:55 am CDT
Extended Forecast for

Tomah WI

  • Today

    Today: Mostly sunny, with a high near 69. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 69 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy during the early evening, then becoming cloudy, with a low around 47. Northwest wind around 6 mph.

    Low: 47 °F

    Becoming
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. Calm wind becoming north around 5 mph.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 61. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 38. Light northwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 56. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 31 mph.

    High: 56 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 2am. Otherwise, clear, with a low around 29. Light northwest wind.

    Low: 29 °F

    Frost

  • Saturday

    Saturday: Widespread frost before 9am. Otherwise, sunny, with a high near 60. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 60 °F

    Frost then
    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 69. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy during the early evening, then becoming cloudy, with a low around 47. Northwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 66. Calm wind becoming north around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 42. Calm wind.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 61. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 38. Light northwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 56. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 31 mph.
Friday Night
Widespread frost, mainly after 2am. Otherwise, clear, with a low around 29. Light northwest wind.
Saturday
Widespread frost before 9am. Otherwise, sunny, with a high near 60. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Clear, with a low around 35. Southwest wind 6 to 8 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 66. Breezy, with a southwest wind 10 to 16 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 41. Southwest wind 3 to 7 mph. Winds could gust as high as 24 mph.
Monday
Mostly sunny, with a high near 68. Light southwest wind.
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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:
6:46 am CDT Oct 13, 2026
Forecast Valid:
8am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
Forecast Discussion
 
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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