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.

Overcast

4°F

-16°C

Humidity 74%
Wind Speed Calm
Barometer 30.45 in (1033.8 mb)
Dewpoint -2°F (-19°C)
Visibility 9.00 mi
Last update 30 Jan 6:55 am CST
Extended Forecast for

Black River Falls WI

  • Today

    Today: Mostly sunny, with a high near 15. Wind chill values as low as -12. Calm wind becoming north 5 to 8 mph in the morning.

    High: 15 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around -2. North wind around 5 mph becoming calm in the evening.

    Low: -2 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 21. Wind chill values as low as -1. Calm wind.

    High: 21 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 0. Light south wind.

    Low: 0 °F

    Mostly Clear

  • Sunday

    Sunday: Snow likely, mainly after noon. Partly sunny, with a high near 23. South wind 3 to 8 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 23 °F

    Chance Snow
    then Snow
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 26. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 26 °F

    Partly Sunny

  • Monday Night

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

    Low: 10 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of snow. Partly sunny, with a high near 27. Calm wind becoming east around 5 mph.

    High: 27 °F

    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 15. Wind chill values as low as -12. Calm wind becoming north 5 to 8 mph in the morning.
Tonight
Partly cloudy, with a low around -2. North wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 21. Wind chill values as low as -1. Calm wind.
Saturday Night
Mostly clear, with a low around 0. Light south wind.
Sunday
Snow likely, mainly after noon. Partly sunny, with a high near 23. South wind 3 to 8 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 11. Calm wind.
Monday
Partly sunny, with a high near 26. Northwest wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 10. Calm wind.
Tuesday
A 30 percent chance of snow. Partly sunny, with a high near 27. Calm wind becoming east around 5 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 11. Calm wind.
Wednesday
Partly sunny, with a high near 27. Light and variable wind.
Wednesday Night
Mostly cloudy, with a low around 11. Calm wind.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 32. Calm wind becoming southwest 5 to 8 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Black River Falls WI
 44.3°N 90.86°W
Last Update:
6:29 am CST Jan 30, 2026
Forecast Valid:
7am CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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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