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.

Fair

66°F

19°C

Humidity 29%
Wind Speed S 5 mph
Barometer 30.16 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 18 Oct 5:15 pm CDT
Extended Forecast for

Merrillan WI

  • Tonight

    Tonight: Mostly clear, with a low around 37. South wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 21 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 66. Calm wind becoming south around 5 mph in the afternoon.

    High: 66 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69. Calm wind becoming south around 5 mph.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. Calm wind.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. South wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 65. Calm wind.
Monday Night
Partly cloudy, with a low around 37. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 66. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 41. Calm wind.
Wednesday
Sunny, with a high near 69. Calm wind becoming south around 5 mph.
Wednesday Night
Partly cloudy, with a low around 46. Calm wind.
Thursday
Mostly sunny, with a high near 70. Calm wind.
Thursday Night
Mostly clear, with a low around 47. Calm wind.
Friday
Mostly sunny, with a high near 68. Southeast wind 3 to 8 mph. Winds could gust as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 51. Southeast wind around 7 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, with a high near 69. South wind 7 to 10 mph, with gusts as high as 23 mph.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 51. Southwest wind 3 to 7 mph. Winds could gust as high as 18 mph.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 65. Calm wind becoming west around 5 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillan WI
 44.45°N 90.82°W
Last Update:
3:26 pm CDT Oct 18, 2026
Forecast Valid:
5pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
 
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Additional Resources

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Chance of Precipitation