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

73°F

23°C

Humidity 53%
Wind Speed S 9 mph
Barometer 29.92 in (1012.9 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 5 Oct 12:55 am CDT
Extended Forecast for

Tomah WI

  • Overnight

    Overnight: Mostly clear, with a low around 62. South wind 7 to 10 mph, with gusts as high as 24 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Sunny, with a high near 81. Breezy, with a south wind 10 to 18 mph, with gusts as high as 31 mph.

    High: 81 °F

    Breezy. Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 51. South wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers. Mostly cloudy, with a high near 65. Northwest wind 3 to 5 mph.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the morning.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 41. Calm wind becoming southeast around 5 mph after midnight.

    Low: 41 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 62. South wind 7 to 10 mph, with gusts as high as 24 mph.
Sunday
A 20 percent chance of showers after 1pm. Sunny, with a high near 81. Breezy, with a south wind 10 to 18 mph, with gusts as high as 31 mph.
Sunday Night
Showers and possibly a thunderstorm. Low around 51. South wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers. Mostly cloudy, with a high near 65. Northwest wind 3 to 5 mph.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 41. Calm wind.
Tuesday
Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the morning.
Tuesday Night
Mostly clear, with a low around 36. Calm wind.
Wednesday
Sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 41. Calm wind becoming southeast around 5 mph after midnight.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 66. South wind 5 to 9 mph.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49. South wind around 6 mph.
Friday
Mostly sunny, with a high near 68. Southwest wind 5 to 7 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 44. Light west wind.
Saturday
Mostly sunny, with a high near 67. Light and variable wind becoming southwest around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 44.01°N 90.51°W
Last Update:
12:28 am CDT Oct 5, 2025
Forecast Valid:
1am CDT Oct 5, 2025-6pm CDT Oct 11, 2025
 
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