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.

Mostly Cloudy

11°F

-12°C

Humidity 74%
Wind Speed W 14 G 21 mph
Barometer 30.03 in (1018.8 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 22 Jan 2:55 am CST
Extended Forecast for

Sparta WI

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

  • Overnight

    Overnight: A chance of flurries. Partly cloudy, with a low around 4. Wind chill values as low as -5. West wind 7 to 9 mph, with gusts as high as 24 mph.

    Low: 4 °F

    Chance
    Flurries

  • Thursday

    Thursday: A chance of flurries. Patchy blowing snow between 2pm and 4pm. Partly sunny, with a high near 13. Wind chill values as low as -16. Breezy, with a west wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 13 °F

    Chance
    Flurries and
    Patchy
    Blowing Snow

  • Thursday Night

    Thursday Night: A chance of flurries before 8pm. Partly cloudy, with a low around -19. Wind chill values as low as -40. Blustery, with a northwest wind 11 to 17 mph, with gusts as high as 31 mph.

    Low: -19 °F

    Chance
    Flurries and
    Blustery then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -5. Wind chill values as low as -39. Northwest wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 22 mph.

    High: -5 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -21. Calm wind.

    Low: -21 °F

    Mostly Cloudy

  • Saturday

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

    High: 2 °F

    Cold

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around -10. Calm wind.

    Low: -10 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a high near 8. Light northwest wind.

    High: 8 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -10. Calm wind.

    Low: -10 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of flurries. Partly cloudy, with a low around 4. Wind chill values as low as -5. West wind 7 to 9 mph, with gusts as high as 24 mph.
Thursday
A chance of flurries. Patchy blowing snow between 2pm and 4pm. Partly sunny, with a high near 13. Wind chill values as low as -16. Breezy, with a west wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph.
Thursday Night
A chance of flurries before 8pm. Partly cloudy, with a low around -19. Wind chill values as low as -40. Blustery, with a northwest wind 11 to 17 mph, with gusts as high as 31 mph.
Friday
Mostly sunny and cold, with a high near -5. Wind chill values as low as -39. Northwest wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Mostly cloudy, with a low around -21. Calm wind.
Saturday
Partly sunny and cold, with a high near 2. Calm wind.
Saturday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around -10. Calm wind.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 8. Light northwest wind.
Sunday Night
Partly cloudy, with a low around -10. Calm wind.
Monday
Mostly sunny, with a high near 12. Calm wind becoming southwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 0. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 18. Calm wind becoming west around 6 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 1. Light northwest wind.
Wednesday
Partly sunny, with a high near 14. Northwest wind 3 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
3:16 am CST Jan 22, 2026
Forecast Valid:
3am CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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