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

59°F

15°C

Humidity 50%
Wind Speed E 7 mph
Barometer 30.16 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 22 May 9:15 am CDT
Extended Forecast for

Merrillan WI

  • Today

    Today: Partly sunny, with a high near 67. Breezy, with an east wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 67 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. East wind 7 to 11 mph, with gusts as high as 25 mph.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 70. Southeast wind 5 to 7 mph.

    High: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 79. Calm wind becoming west around 6 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 83. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. South wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 67. Breezy, with an east wind 13 to 17 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 50. East wind 7 to 11 mph, with gusts as high as 25 mph.
Saturday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 70. Southeast wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 48. Calm wind.
Sunday
Mostly sunny, with a high near 79. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 51. Calm wind.
Memorial Day
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 83. Calm wind becoming south 5 to 9 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57. South wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 57. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming east 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. East wind 3 to 6 mph.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 84. East wind 5 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillan WI
 44.45°N 90.85°W
Last Update:
8:31 am CDT May 22, 2026
Forecast Valid:
9am CDT May 22, 2026-6pm CDT May 28, 2026
 
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Additional Resources

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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