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.

Fair

51°F

11°C

Humidity 100%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 51°F (11°C)
Visibility 7.00 mi
Last update 26 Sep 2:55 am CDT
Extended Forecast for

Merrillan WI

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, sunny, with a high near 75. East wind 3 to 5 mph.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 54. Southeast wind 3 to 5 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming southwest around 6 mph in the morning.

    High: 76 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. Light north wind.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Calm wind.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Light south wind.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 53. Calm wind.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 75. East wind 3 to 5 mph.
Friday Night
Increasing clouds, with a low around 54. Southeast wind 3 to 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 43. Light north wind.
Sunday
Sunny, with a high near 75. Calm wind.
Sunday Night
Mostly clear, with a low around 53. Calm wind.
Monday
Sunny, with a high near 81. Light south wind.
Monday Night
Partly cloudy, with a low around 54. Calm wind.
Tuesday
Partly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 53. Light east wind.
Wednesday
Mostly sunny, with a high near 75. Southeast wind 3 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 51. Southeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 74. South wind 5 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillan WI
 44.45°N 90.82°W
Last Update:
2:28 am CDT Sep 26, 2025
Forecast Valid:
3am CDT Sep 26, 2025-6pm CDT Oct 2, 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