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

13°F

-11°C

Humidity 55%
Wind Speed Calm
Barometer 30.12 in (1023.3 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 20 Jan 6:55 pm CST
Extended Forecast for

Melvina WI

Extreme Cold Watch January 23, 12:00am until January 24, 12:00pm
Click here for hazard details and duration
Extreme Cold Watch

  • Tonight

    Tonight: Snow likely, mainly before 3am. Cloudy, with a low around 8. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.

    Low: 8 °F

    Snow Likely

  • Wednesday

    Wednesday: Snow, mainly after 2pm. High near 24. Wind chill values as low as zero. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 24 °F

    Mostly Cloudy
    then Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 2. Wind chill values as low as -9. West wind 8 to 15 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.

    Low: 2 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 13. Wind chill values as low as -11. West wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 13 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -18. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: -18 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -6. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -19. Northwest wind around 5 mph becoming calm in the evening.

    Low: -19 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 2. Calm wind.

    High: 2 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -9. Calm wind.

    Low: -9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow likely, mainly before 3am. Cloudy, with a low around 8. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Snow, mainly after 2pm. High near 24. Wind chill values as low as zero. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Wednesday Night
A 40 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 2. Wind chill values as low as -9. West wind 8 to 15 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.
Thursday
Partly sunny, with a high near 13. Wind chill values as low as -11. West wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Partly cloudy, with a low around -18. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.
Friday
Mostly sunny and cold, with a high near -6. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around -19. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny and cold, with a high near 2. Calm wind.
Saturday Night
Mostly cloudy, with a low around -9. Calm wind.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 8. Calm wind becoming west around 5 mph.
Sunday Night
Partly cloudy, with a low around -8. West wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 14. West wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 1. Southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 21. Southwest wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Melvina WI
 43.8°N 90.79°W
Last Update:
6:51 pm CST Jan 20, 2026
Forecast Valid:
7pm CST Jan 20, 2026-6pm CST Jan 27, 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