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Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Partly Cloudy

10°F

-12°C

Humidity 89%
Wind Speed Calm
Barometer 29.95 in (1016.5 mb)
Dewpoint 8°F (-13°C)
Visibility 9.00 mi
Last update 21 Jan 3:55 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

  • Today

    Today: Snow showers, mainly after 2pm. High near 23. Light southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 23 °F

    Cloudy then
    Snow Showers

  • Tonight

    Tonight: Snow showers likely, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values as low as -8. Breezy, with a west wind 8 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 4 °F

    Snow Showers
    Likely and
    Breezy then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 14. Wind chill values as low as -10. West wind 5 to 13 mph, with gusts as high as 23 mph.

    High: 14 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -19. Wind chill values as low as -33. Northwest wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: -19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -7. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    High: -7 °F

    Cold

  • Friday Night

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

    Low: -21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 0. Calm wind.

    High: 0 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -14. Calm wind.

    Low: -14 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 8. Light west wind.

    High: 8 °F

    Partly Sunny

Detailed Forecast

Today
Snow showers, mainly after 2pm. High near 23. Light southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow showers likely, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values as low as -8. Breezy, with a west wind 8 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday
Partly sunny, with a high near 14. Wind chill values as low as -10. West wind 5 to 13 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around -19. Wind chill values as low as -33. Northwest wind 7 to 10 mph, with gusts as high as 23 mph.
Friday
Mostly sunny and cold, with a high near -7. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around -21. Calm wind.
Saturday
Mostly sunny and cold, with a high near 0. Calm wind.
Saturday Night
Partly cloudy, with a low around -14. Calm wind.
Sunday
Partly sunny, with a high near 8. Light west wind.
Sunday Night
Partly cloudy, with a low around -10. Calm wind.
Monday
Mostly sunny, with a high near 14. Calm wind becoming southwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 1. Light southwest wind.
Tuesday
Mostly sunny, with a high near 21. Calm wind becoming west around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
3:06 am CST Jan 21, 2026
Forecast Valid:
4am CST Jan 21, 2026-6pm CST Jan 27, 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