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

Hazardous Weather Conditions

Current conditions at

Black River Falls Area Airport (KBCK)

Lat: 44.25°NLon: 90.85°WElev: 830ft.

Fair

87°F

31°C

Humidity 57%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 1 Sep 11:55 am CDT
Extended Forecast for

8 Miles ESE Merrillan WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 91. Calm wind becoming west around 5 mph.

    High: 91 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 66 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before midnight, then a chance of showers after 4am. Increasing clouds, with a low around 65. Calm wind. Chance of precipitation is 30%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Light east wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Light and variable wind becoming southeast around 5 mph.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers. Partly sunny, with a high near 88. Light southeast wind.

    High: 88 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 91. Calm wind becoming west around 5 mph.
Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 20 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Light and variable wind.
Wednesday Night
A slight chance of showers and thunderstorms before midnight, then a chance of showers after 4am. Increasing clouds, with a low around 65. Calm wind. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Light east wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Light and variable wind becoming southeast around 5 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 88. Light southeast wind.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Light southeast wind. Chance of precipitation is 40%.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 59. Light east wind.
Labor Day
A 30 percent chance of showers. Partly sunny, with a high near 79. East wind 3 to 6 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ESE Merrillan WI
 44.42°N 90.67°W
Last Update:
11:41 am CDT Sep 1, 2026
Forecast Valid:
12pm CDT Sep 1, 2026-6pm CDT Sep 7, 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