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

60°F

16°C

Humidity 89%
Wind Speed Calm
Barometer 29.77 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 2:15 am CDT
Extended Forecast for

Merrillan WI

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 68. South wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy

  • Columbus Day

    Columbus Day: A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Partly cloudy, with a low around 57. Light and variable wind becoming west 5 to 7 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 70. Northwest wind 5 to 8 mph, with gusts as high as 18 mph.

    High: 70 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65. Calm wind becoming north around 5 mph.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 61. Light and variable wind becoming east around 5 mph. Chance of precipitation is 60%.

    High: 61 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 38. Light west wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 28 mph.

    Low: 38 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 68. South wind around 5 mph.
Columbus Day
A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South wind 3 to 6 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Partly cloudy, with a low around 57. Light and variable wind becoming west 5 to 7 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 70. Northwest wind 5 to 8 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 48. Calm wind.
Wednesday
Mostly sunny, with a high near 65. Calm wind becoming north around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 41. Calm wind.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 61. Light and variable wind becoming east around 5 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 38. Light west wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 28 mph.
Friday
Mostly sunny, with a high near 54. Breezy, with a northwest wind 15 to 18 mph, with gusts as high as 34 mph.
Friday Night
Mostly clear, with a low around 27. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 57. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 34. South wind 6 to 8 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 64. Southwest wind 8 to 13 mph, with gusts as high as 25 mph.
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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:
2:21 am CDT Oct 12, 2026
Forecast Valid:
2am CDT Oct 12, 2026-6pm CDT Oct 18, 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