National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

11°F

-12°C

Humidity 51%
Wind Speed Calm
Barometer 30.32 in (1030.0 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Last update 29 Jan 12:55 pm CST
Extended Forecast for

Sparta WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 12. Calm wind.

    High: 12 °F

    Sunny

  • Tonight

    Tonight: A chance of flurries between 10pm and 3am. Increasing clouds, with a low around -7. Calm wind.

    Low: -7 °F

    Chance
    Flurries

  • Friday

    Friday: Mostly sunny, with a high near 14. Wind chill values as low as -7. Calm wind becoming north 5 to 7 mph in the morning.

    High: 14 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -1. Northwest wind around 5 mph becoming calm in the evening.

    Low: -1 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 22. Calm wind.

    High: 22 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 4. Light south wind.

    Low: 4 °F

    Mostly Clear

  • Sunday

    Sunday: Snow likely, mainly after noon. Partly sunny, with a high near 26. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 26 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 13. Calm wind.

    Low: 13 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 26. Light northwest wind.

    High: 26 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 12. Calm wind.
Tonight
A chance of flurries between 10pm and 3am. Increasing clouds, with a low around -7. Calm wind.
Friday
Mostly sunny, with a high near 14. Wind chill values as low as -7. Calm wind becoming north 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around -1. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 22. Calm wind.
Saturday Night
Mostly clear, with a low around 4. Light south wind.
Sunday
Snow likely, mainly after noon. Partly sunny, with a high near 26. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 13. Calm wind.
Monday
Partly sunny, with a high near 26. Light northwest wind.
Monday Night
Mostly cloudy, with a low around 9. Calm wind.
Tuesday
A 30 percent chance of snow. Partly sunny, with a high near 27. Light east wind.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12. Calm wind.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 28. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
12:52 pm CST Jan 29, 2026
Forecast Valid:
1pm CST Jan 29, 2026-6pm CST Feb 4, 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