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

60°F

16°C

Humidity 47%
Wind Speed NW 16 G 23 mph
Barometer 29.88 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 12 May 9:55 pm CDT
Extended Forecast for

5 Miles ESE Merrillan WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Northwest wind 8 to 11 mph, with gusts as high as 26 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 68. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 68 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Areas of frost after 4am. Otherwise, clear, with a low around 37. North wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Clear then
    Areas Frost

  • Thursday

    Thursday: Sunny, with a high near 74. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 20 mph.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers. Low around 49. South wind around 7 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Showers

  • Friday

    Friday: Sunny, with a high near 84. South wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Sunny, with a high near 81. Calm wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 20 mph.

    High: 81 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 50. Calm wind becoming east around 5 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. Northwest wind 8 to 11 mph, with gusts as high as 26 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 68. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.
Wednesday Night
Areas of frost after 4am. Otherwise, clear, with a low around 37. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 74. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Showers. Low around 49. South wind around 7 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Sunny, with a high near 84. South wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Friday Night
Mostly clear, with a low around 51. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
A 20 percent chance of showers after 1pm. Sunny, with a high near 81. Calm wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 50. Calm wind becoming east around 5 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 8 to 10 mph, with gusts as high as 24 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Southeast wind 6 to 8 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Monday
Showers likely. Mostly cloudy, with a high near 79. South wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 50. West wind 3 to 7 mph. Winds could gust as high as 21 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 75. Northwest wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Merrillan WI
 44.42°N 90.73°W
Last Update:
9:27 pm CDT May 12, 2026
Forecast Valid:
10pm CDT May 12, 2026-6pm CDT May 19, 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