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

57°F

14°C

Humidity 81%
Wind Speed SW 10 mph
Barometer 29.77 in (1008.5 mb)
Dewpoint 51°F (11°C)
Visibility 9.00 mi
Last update 12 Apr 5:55 am CDT
Extended Forecast for

Tomah WI

  • Today

    Today: Showers and thunderstorms, mainly before 3pm. High near 73. Breezy, with a southwest wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Breezy.
    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 57. Breezy, with a southwest wind 9 to 18 mph, with gusts as high as 31 mph.

    Low: 57 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 76. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 56. Southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 50 percent chance of showers after 1pm. Mostly sunny, with a high near 77. Southwest wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 71. South wind 5 to 9 mph. Chance of precipitation is 60%.

    High: 71 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Southeast wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers. Mostly sunny, with a high near 73. West wind 5 to 8 mph.

    High: 73 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms, mainly before 3pm. High near 73. Breezy, with a southwest wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 57. Breezy, with a southwest wind 9 to 18 mph, with gusts as high as 31 mph.
Monday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 76. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 56. Southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 50 percent chance of showers after 1pm. Mostly sunny, with a high near 77. Southwest wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 71. South wind 5 to 9 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Southeast wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 50%.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 73. West wind 5 to 8 mph.
Thursday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 51. South wind around 6 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 76. South wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 41. South wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 55. Northwest wind 9 to 11 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
6:56 am CDT Apr 12, 2026
Forecast Valid:
7am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation