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.

Fog

54°F

12°C

Humidity 99%
Wind Speed Calm
Barometer 29.69 in (1005.8 mb)
Dewpoint 54°F (12°C)
Visibility 0.13 mi
Last update 15 Apr 9:55 pm CDT
Extended Forecast for

Melvina 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: 53 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers between 7am and 8am. Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 74. Light and variable wind. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 20 mph.

    Low: 55 °F

    Clear

  • Friday

    Friday: Showers and possibly a thunderstorm after 1pm. High near 77. Breezy, with a south wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Breezy.
    Mostly Sunny
    then Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 33. Southwest wind around 15 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 33 °F

    Showers

  • Saturday

    Saturday: A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm. Mostly sunny, with a high near 45. Breezy, with a west wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. West wind 9 to 15 mph, with gusts as high as 26 mph.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 50. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 50 °F

    Sunny

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 4am. Patchy fog. Low around 53. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers between 7am and 8am. Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 74. Light and variable wind. Chance of precipitation is 20%.
Thursday Night
Clear, with a low around 55. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 20 mph.
Friday
Showers and possibly a thunderstorm after 1pm. High near 77. Breezy, with a south wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm. Low around 33. Southwest wind around 15 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm. Mostly sunny, with a high near 45. Breezy, with a west wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 28. West wind 9 to 15 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 50. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 28. Northwest wind 5 to 7 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 61. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 46. South wind 8 to 11 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 69. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 43. Southwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 66. South wind 6 to 9 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Melvina WI
 43.8°N 90.79°W
Last Update:
10:51 pm CDT Apr 15, 2026
Forecast Valid:
11pm CDT Apr 15, 2026-6pm CDT Apr 22, 2026
 
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