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.

Fog/Mist

34°F

1°C

Humidity 97%
Wind Speed Calm
Barometer 30.14 in (1021.8 mb)
Dewpoint 34°F (1°C)
Visibility 3.00 mi
Last update 24 Dec 11:55 pm CST
Extended Forecast for

Melvina WI

  • Overnight

    Overnight: Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 28. Calm wind becoming northeast around 5 mph.

    Low: 28 °F

    Patchy Fog

  • Christmas Day

    Christmas Day: Patchy drizzle after 4pm. Partly sunny, with a high near 35. East wind 6 to 11 mph, with gusts as high as 23 mph.

    High: 35 °F

    Partly Sunny
    then Patchy
    Drizzle

  • Thursday Night

    Thursday Night: Patchy drizzle or freezing rain before 10pm, then drizzle. Patchy fog after 11pm. Otherwise, cloudy, with a temperature rising to around 37 by 3am. Southeast wind 6 to 11 mph becoming light south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F⇑


    Drizzle/Freezing
    Rain and
    Patchy Fog

  • Friday

    Friday: A 20 percent chance of rain before noon. Mostly cloudy, with a high near 42. Calm wind.

    High: 42 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Light and variable wind.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 45. Southeast wind 3 to 7 mph.

    High: 45 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 29. Southeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 29 °F

    Cloudy

  • Sunday

    Sunday: A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 35. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.

    High: 35 °F

    Breezy.
    Chance
    Rain/Snow
    then Chance
    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 7. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 37 mph.

    Low: 7 °F

    Mostly Cloudy
    and Blustery

Detailed Forecast

Overnight
Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 28. Calm wind becoming northeast around 5 mph.
Christmas Day
Patchy drizzle after 4pm. Partly sunny, with a high near 35. East wind 6 to 11 mph, with gusts as high as 23 mph.
Thursday Night
Patchy drizzle or freezing rain before 10pm, then drizzle. Patchy fog after 11pm. Otherwise, cloudy, with a temperature rising to around 37 by 3am. Southeast wind 6 to 11 mph becoming light south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain before noon. Mostly cloudy, with a high near 42. Calm wind.
Friday Night
Mostly cloudy, with a low around 33. Light and variable wind.
Saturday
Mostly cloudy, with a high near 45. Southeast wind 3 to 7 mph.
Saturday Night
Cloudy, with a low around 29. Southeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Sunday
A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 35. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 7. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 37 mph.
Monday
Partly sunny, with a high near 18. Blustery, with a northwest wind 13 to 18 mph, with gusts as high as 33 mph.
Monday Night
Mostly cloudy, with a low around 7. Northwest wind 6 to 11 mph, with gusts as high as 23 mph.
Tuesday
Mostly cloudy, with a high near 28. West wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 10. West wind 9 to 11 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 24. Northwest wind 11 to 14 mph, with gusts as high as 24 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:
11:31 pm CST Dec 24, 2025
Forecast Valid:
12am CST Dec 25, 2025-6pm CST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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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