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Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Light Unknown Precip Fog/Mist

13°F

-11°C

Humidity 85%
Wind Speed Calm
Barometer 30.02 in (1018.7 mb)
Dewpoint 9°F (-13°C)
Visibility 2.75 mi
Last update 21 Jan 12:55 am CST
Extended Forecast for

Sparta WI

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

  • Overnight

    Overnight: A chance of snow before 4am, then a chance of flurries between 4am and 5am. Cloudy, with a low around 8. Calm wind. Chance of precipitation is 40%. Total nighttime snow accumulation of less than one inch possible.

    Low: 8 °F

    Chance Snow

  • Wednesday

    Wednesday: Snow, mainly after 1pm. High near 24. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 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 30 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 2. Wind chill values as low as -5. West wind 5 to 11 mph, with gusts as high as 28 mph.

    Low: 2 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 13. Wind chill values as low as -6. Light west wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 13 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -18. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: -18 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -6. Northwest wind 3 to 8 mph.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -24. Calm wind.

    Low: -24 °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 -10. Calm wind.

    Low: -10 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow before 4am, then a chance of flurries between 4am and 5am. Cloudy, with a low around 8. Calm wind. Chance of precipitation is 40%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Snow, mainly after 1pm. High near 24. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Wednesday Night
A 30 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 2. Wind chill values as low as -5. West wind 5 to 11 mph, with gusts as high as 28 mph.
Thursday
Partly sunny, with a high near 13. Wind chill values as low as -6. Light west wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Partly cloudy, with a low around -18. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.
Friday
Mostly sunny and cold, with a high near -6. Northwest wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around -24. Calm wind.
Saturday
Mostly sunny and cold, with a high near 2. Calm wind.
Saturday Night
Mostly cloudy, with a low around -10. Calm wind.
Sunday
Partly sunny, with a high near 9. Light west wind.
Sunday Night
Partly cloudy, with a low around -8. Calm wind.
Monday
Mostly sunny, with a high near 15. Calm wind becoming west 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 1. Light southwest wind.
Tuesday
Partly sunny, with a high near 21. Calm wind becoming west around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.95°N 90.81°W
Last Update:
11:06 pm CST Jan 20, 2026
Forecast Valid:
1am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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