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

Black River Falls Area Airport (KBCK)

Lat: 44.25°NLon: 90.85°WElev: 830ft.

Overcast

25°F

-4°C

Humidity 81%
Wind Speed W 6 mph
Barometer 30.35 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 11 Jan 11:55 am CST
Extended Forecast for

Merrillan WI

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 28. West wind around 7 mph.

    High: 28 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 23. Southwest wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 23 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 39. West wind around 6 mph becoming calm in the afternoon.

    High: 39 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of snow between midnight and 3am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 27. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 10%.

    Low: 27 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tuesday

    Tuesday: A 40 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 41. West wind 6 to 10 mph, with gusts as high as 23 mph.

    High: 41 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after midnight. Cloudy, with a low around 19. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.

    Low: 19 °F

    Cloudy then
    Slight Chance
    Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 25. North wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 25 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 7. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.

    Low: 7 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 25. Calm wind becoming south around 6 mph in the afternoon.

    High: 25 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 28. West wind around 7 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 23. Southwest wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 20 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 39. West wind around 6 mph becoming calm in the afternoon.
Monday Night
A slight chance of snow between midnight and 3am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 27. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 10%.
Tuesday
A 40 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 41. West wind 6 to 10 mph, with gusts as high as 23 mph.
Tuesday Night
A 20 percent chance of snow after midnight. Cloudy, with a low around 19. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 25. North wind 10 to 14 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 7. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Thursday
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 25. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Snow likely. Mostly cloudy, with a low around 18. South wind around 6 mph. Chance of precipitation is 60%.
Friday
Snow likely. Mostly cloudy, with a high near 28. South wind 5 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 70%.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8. Northwest wind around 7 mph.
Saturday
Mostly cloudy, with a high near 17. Northwest wind 7 to 9 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillan WI
 44.45°N 90.85°W
Last Update:
12:16 pm CST Jan 11, 2026
Forecast Valid:
12pm CST Jan 11, 2026-6pm CST Jan 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation