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.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
3:16 am CST Jan 22, 2026
3am CST Jan 22, 2026-6pm CST Jan 28, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database