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.

Mostly Cloudy

83°F

28°C

Humidity 42%
Wind Speed SE 7 mph
Barometer 30.23 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 5 Aug 5:35 pm CDT
Extended Forecast for

Merrillan WI

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Southeast wind 3 to 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 84. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 84 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Light south wind.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind 3 to 6 mph. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light south wind. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 91. South wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 70. South wind around 6 mph.

    Low: 70 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South wind 6 to 8 mph.

    High: 90 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 6 mph becoming calm in the evening.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. Southeast wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 84. Calm wind becoming southeast 5 to 7 mph in the morning.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Light south wind.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind 3 to 6 mph. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light south wind. Chance of precipitation is 20%.
Friday
Sunny, with a high near 91. South wind 3 to 8 mph. Winds could gust as high as 18 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 70. South wind around 6 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South wind 6 to 8 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 6 mph becoming calm in the evening.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. South wind 3 to 6 mph. Chance of precipitation is 40%.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light southwest wind.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Calm wind becoming west around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillan WI
 44.45°N 90.82°W
Last Update:
4:29 pm CDT Aug 5, 2025
Forecast Valid:
6pm CDT Aug 5, 2025-6pm CDT Aug 12, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation