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Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Mostly Cloudy

12°F

-11°C

Humidity 63%
Wind Speed W 5 mph
Barometer 30.00 in (1017.8 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 22 Jan 12:55 am CST
Extended Forecast for

Sparta WI

Extreme Cold Watch January 23, 11:00am until January 24, 12:00pm
Extreme Cold Warning January 23, 12:00am until January 23, 11:00am
Click here for hazard details and duration
Extreme Cold Watch
Extreme Cold Warning

  • Overnight

    Overnight: A chance of flurries after 3am. Mostly cloudy, with a low around 3. Wind chill values as low as -8. West wind 8 to 13 mph, with gusts as high as 28 mph.

    Low: 3 °F

    Chance
    Flurries

  • Thursday

    Thursday: A slight chance of snow before 4pm, then a chance of flurries after 4pm. Partly sunny, with a high near 13. Wind chill values as low as -17. Breezy, with a west wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 20%.

    High: 13 °F

    Slight Chance
    Snow and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -20. Wind chill values as low as -41. Breezy, with a northwest wind 10 to 17 mph, with gusts as high as 29 mph.

    Low: -20 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -6. Wind chill values as low as -37. Northwest wind 5 to 9 mph becoming light in the afternoon. Winds could gust as high as 18 mph.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -20. Calm wind.

    Low: -20 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 1. Calm wind.

    High: 1 °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 before noon. Partly sunny, with a high near 9. Light and variable wind.

    High: 9 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Sunday Night

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

    Low: -10 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of flurries after 3am. Mostly cloudy, with a low around 3. Wind chill values as low as -8. West wind 8 to 13 mph, with gusts as high as 28 mph.
Thursday
A slight chance of snow before 4pm, then a chance of flurries after 4pm. Partly sunny, with a high near 13. Wind chill values as low as -17. Breezy, with a west wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around -20. Wind chill values as low as -41. Breezy, with a northwest wind 10 to 17 mph, with gusts as high as 29 mph.
Friday
Mostly sunny and cold, with a high near -6. Wind chill values as low as -37. Northwest wind 5 to 9 mph becoming light in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Partly cloudy, with a low around -20. Calm wind.
Saturday
Partly sunny and cold, with a high near 1. 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 before noon. Partly sunny, with a high near 9. Light and variable wind.
Sunday Night
Mostly cloudy, with a low around -10. Calm wind.
Monday
Mostly sunny, with a high near 11. Calm wind becoming west 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around -1. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 20. 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 15. Northwest wind 3 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.95°N 90.81°W
Last Update:
10:26 pm CST Jan 21, 2026
Forecast Valid:
1am CST Jan 22, 2026-6pm CST Jan 28, 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