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

33°F

1°C

Humidity 84%
Wind Speed Calm
Barometer 29.96 in (1015.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 18 Mar 8:55 pm CDT
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: A slight chance of freezing rain between 2am and 4am. Mostly cloudy, with a steady temperature around 32. Light south wind. Chance of precipitation is 20%.

    Low: 32 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Thursday

    Thursday: Patchy fog before noon. Otherwise, partly sunny, with a high near 47. Calm wind becoming east around 5 mph in the afternoon.

    High: 47 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35. Light and variable wind becoming southwest 5 to 7 mph after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 56. Northwest wind 5 to 7 mph.

    High: 56 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. West wind around 8 mph becoming northeast after midnight.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 45. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 45 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. North wind 3 to 7 mph.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of freezing rain between 2am and 4am. Mostly cloudy, with a steady temperature around 32. Light south wind. Chance of precipitation is 20%.
Thursday
Patchy fog before noon. Otherwise, partly sunny, with a high near 47. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 35. Light and variable wind becoming southwest 5 to 7 mph after midnight.
Friday
Partly sunny, with a high near 56. Northwest wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 33. Calm wind.
Saturday
Mostly sunny, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 34. West wind around 8 mph becoming northeast after midnight.
Sunday
Mostly cloudy, with a high near 45. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 21. North wind 3 to 7 mph.
Monday
Sunny, with a high near 44. Light and variable wind becoming northeast around 6 mph in the morning.
Monday Night
Mostly cloudy, with a low around 28. South wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 52. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 29. Light and variable wind becoming southeast around 5 mph after midnight.
Wednesday
A slight chance of rain and snow. Mostly cloudy, with a high near 55. Southeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
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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:
6:16 pm CDT Mar 18, 2026
Forecast Valid:
9pm CDT Mar 18, 2026-6pm CDT Mar 25, 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