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.

Mostly Cloudy

53°F

12°C

Humidity 41%
Wind Speed W 13 G 23 mph
Barometer 30.10 in (1020.2 mb)
Dewpoint 30°F (-1°C)
Visibility 9.00 mi
Wind Chill49°F (9°C)
Last update 5 Apr 5:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 31. Northwest wind around 7 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Showers
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Isolated snow showers after 1pm. Partly sunny, with a high near 41. Northwest wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 41 °F

    Mostly Cloudy
    then Isolated
    Snow Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 15. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 44. Calm wind becoming south around 5 mph in the afternoon.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Rain and snow showers likely, becoming all rain after 4am. Mostly cloudy, with a low around 31. Southeast wind 5 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 64. Breezy, with a south wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 41. Southwest wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 41 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 58. West wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 58 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers. Partly cloudy, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 31. Northwest wind around 7 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Isolated snow showers after 1pm. Partly sunny, with a high near 41. Northwest wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 15. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 44. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Rain and snow showers likely, becoming all rain after 4am. Mostly cloudy, with a low around 31. Southeast wind 5 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 64. Breezy, with a south wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 41. Southwest wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 58. West wind 6 to 10 mph, with gusts as high as 18 mph.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 58. Light north wind.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 35. Light and variable wind.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 60. Southeast wind 3 to 8 mph.
Saturday Night
Showers likely. Mostly cloudy, with a low around 46. Southeast wind around 7 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. South wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
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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:
5:41 pm CDT Apr 5, 2026
Forecast Valid:
7pm CDT Apr 5, 2026-6pm CDT Apr 12, 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