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.

Overcast

28°F

-2°C

Humidity 90%
Wind Speed Calm
Barometer 30.02 in (1017.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 19 Apr 5:55 am CDT
Extended Forecast for

Sparta WI

  • Today

    Today: A slight chance of snow showers between 7am and 9am. Mostly cloudy, then gradually becoming sunny, with a high near 48. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Snow Showers
    then Sunny

  • Tonight

    Tonight: Widespread frost after 3am. Otherwise, mostly clear, with a low around 23. Northwest wind around 6 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, mostly sunny, with a high near 56. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 56 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. South wind 3 to 7 mph. Winds could gust as high as 18 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 73. Light and variable wind.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. South wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Breezy, with a south wind 8 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

Detailed Forecast

Today
A slight chance of snow showers between 7am and 9am. Mostly cloudy, then gradually becoming sunny, with a high near 48. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Tonight
Widespread frost after 3am. Otherwise, mostly clear, with a low around 23. Northwest wind around 6 mph becoming calm in the evening.
Monday
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 56. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 42. South wind 3 to 7 mph. Winds could gust as high as 18 mph.
Tuesday
Sunny, with a high near 73. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 40. Calm wind.
Wednesday
Sunny, with a high near 76. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 57. South wind 6 to 8 mph, with gusts as high as 18 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Breezy, with a south wind 8 to 17 mph, with gusts as high as 26 mph.
Thursday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 50. South wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 64. West wind 7 to 11 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 38. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 60. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
5:21 am CDT Apr 19, 2026
Forecast Valid:
6am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation