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

53°F

12°C

Humidity 93%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 16 Oct 1:35 am CDT
Extended Forecast for

Merrillan WI

  • Overnight

    Overnight: A 10 percent chance of showers after 5am. Cloudy, with a low around 45. Southeast wind 3 to 6 mph.

    Low: 45 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 62. Southeast wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 1am. Mostly cloudy, with a low around 54. Southeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 73. South wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 49. South wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers. Partly sunny, with a high near 67. West wind 3 to 8 mph.

    High: 67 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 41. Northwest wind around 7 mph. Chance of precipitation is 40%.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 57. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. West wind around 5 mph becoming light and variable in the evening.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
A 10 percent chance of showers after 5am. Cloudy, with a low around 45. Southeast wind 3 to 6 mph.
Thursday
Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 62. Southeast wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 1am. Mostly cloudy, with a low around 54. Southeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 73. South wind 8 to 11 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 49. South wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 67. West wind 3 to 8 mph.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 41. Northwest wind around 7 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 57. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 36. West wind around 5 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 61. South wind 5 to 9 mph, with gusts as high as 18 mph.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 39. South wind around 7 mph becoming west after midnight.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 59. West wind 7 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 36. West wind 6 to 8 mph, with gusts as high as 20 mph.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 58. West wind 7 to 10 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillan WI
 44.45°N 90.85°W
Last Update:
12:21 am CDT Oct 16, 2025
Forecast Valid:
1am CDT Oct 16, 2025-6pm CDT Oct 22, 2025
 
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