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.

A Few Clouds and Breezy

13°F

-11°C

Humidity 50%
Wind Speed W 21 G 35 mph
Barometer 30.10 in (1021.5 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 22 Jan 1:55 pm CST
Extended Forecast for

Sparta WI

Cold Weather Advisory January 23, 12:00pm until January 23, 09:00pm
Extreme Cold Warning January 23, 12:00am until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning

  • This Afternoon

    This Afternoon: Scattered snow showers. Patchy blowing snow before 4pm. Partly sunny, with a high near 12. Wind chill values as low as -17. Breezy, with a west wind 16 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.

    High: 12 °F

    Scattered
    Snow Showers
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Isolated snow showers before 8pm. Partly cloudy, with a low around -20. Wind chill values as low as -41. Blustery, with a northwest wind 10 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    Low: -20 °F

    Isolated Snow
    Showers and
    Blustery then
    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -6. Wind chill values as low as -42. Northwest wind 6 to 11 mph becoming light in the afternoon.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -17. Calm wind.

    Low: -17 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly 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

  • Sunday

    Sunday: Partly sunny, with a high near 7. Calm wind becoming north around 5 mph.

    High: 7 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -12. Calm wind.

    Low: -12 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 12. Calm wind becoming southwest around 6 mph in the morning.

    High: 12 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered snow showers. Patchy blowing snow before 4pm. Partly sunny, with a high near 12. Wind chill values as low as -17. Breezy, with a west wind 16 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Isolated snow showers before 8pm. Partly cloudy, with a low around -20. Wind chill values as low as -41. Blustery, with a northwest wind 10 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Friday
Sunny and cold, with a high near -6. Wind chill values as low as -42. Northwest wind 6 to 11 mph becoming light in the afternoon.
Friday Night
Mostly cloudy, with a low around -17. Calm wind.
Saturday
Partly sunny and cold, with a high near 2. Calm wind.
Saturday Night
Mostly cloudy, with a low around -9. Calm wind.
Sunday
Partly sunny, with a high near 7. Calm wind becoming north around 5 mph.
Sunday Night
Partly cloudy, with a low around -12. Calm wind.
Monday
Mostly sunny, with a high near 12. Calm wind becoming southwest around 6 mph in the morning.
Monday Night
Mostly cloudy, with a low around 3. Southwest wind around 5 mph becoming west after midnight.
Tuesday
Mostly sunny, with a high near 16. West wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around -2. Light west wind.
Wednesday
Partly sunny, with a high near 12. Calm wind becoming northwest 5 to 7 mph in the morning.
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:
1:51 pm CST Jan 22, 2026
Forecast Valid:
2pm 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