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

61°F

16°C

Humidity 94%
Wind Speed Calm
Barometer 29.67 in (1005.0 mb)
Dewpoint 60°F (16°C)
Visibility 7.00 mi
Last update 15 Apr 6:55 pm CDT
Extended Forecast for

Sparta WI

Flood Watch until April 16, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until April 16, 07:00am

    NOW until 7:00am Thu

    Flood Watch

  • Tonight

    Low: 52 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of thunderstorms before 7am. Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 71. Light and variable wind. Chance of precipitation is 10%.

    High: 71 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 52. South wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Clear

  • Friday

    Friday: Showers and possibly a thunderstorm after 1pm. High near 77. Breezy, with a south wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. 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.

    High: 77 °F

    Mostly Sunny
    then Showers
    and Breezy

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 33. South wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 33 °F

    Showers

  • Saturday

    Saturday: A chance of rain showers before 1pm, then a slight chance of rain and snow showers. Partly sunny, with a high near 46. Breezy, with a west wind 11 to 20 mph. Chance of precipitation is 30%.

    High: 46 °F

    Chance
    Showers then
    Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. West wind 6 to 13 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 50. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 50 °F

    Sunny

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 52. Calm wind. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of thunderstorms before 7am. Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 71. Light and variable wind. Chance of precipitation is 10%.
Thursday Night
Clear, with a low around 52. South wind 5 to 8 mph, with gusts as high as 20 mph.
Friday
Showers and possibly a thunderstorm after 1pm. High near 77. Breezy, with a south wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. 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.
Friday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 33. South wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A chance of rain showers before 1pm, then a slight chance of rain and snow showers. Partly sunny, with a high near 46. Breezy, with a west wind 11 to 20 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 28. West wind 6 to 13 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 50. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 27. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 61. Light southeast wind becoming south 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 45. South wind around 8 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 69. West wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 43. Southwest wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 66. South wind 5 to 8 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:
6:26 pm CDT Apr 15, 2026
Forecast Valid:
7pm CDT Apr 15, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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