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.

47°F

8°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 47°F (8°C)
Visibility 7.00 mi
Last update 22 Jun 6:16 am CDT
Extended Forecast for

Merrillan WI

  • Today

    Today: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming north around 5 mph.

    High: 76 °F

    Areas Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 10 percent chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 77. Light south wind.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm after 7pm. Low around 56. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. West wind 3 to 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73. Northwest wind 3 to 6 mph.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Light north wind.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 77. Calm wind.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming north around 5 mph.
Tonight
Partly cloudy, with a low around 50. Calm wind.
Tuesday
A 10 percent chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 77. Light south wind.
Tuesday Night
Showers and possibly a thunderstorm after 7pm. Low around 56. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. West wind 3 to 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Partly cloudy, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 73. Northwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 50. Light north wind.
Friday
Mostly sunny, with a high near 77. Calm wind.
Friday Night
Mostly cloudy, with a low around 54. Calm wind.
Saturday
Partly sunny, with a high near 80. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Southeast wind around 7 mph, with gusts as high as 22 mph.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southeast wind 9 to 11 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:
5:46 am CDT Jun 22, 2026
Forecast Valid:
6am CDT Jun 22, 2026-6pm CDT Jun 28, 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