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

65°F

18°C

Humidity 100%
Wind Speed S 3 mph
Barometer 29.93 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 2 Sep 8:15 am CDT
Extended Forecast for

Blair WI

  • Today

    Today: A 50 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 84. Light and variable wind. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 85. Calm wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely then
    Chance
    T-storms

  • 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. Southeast wind around 5 mph becoming calm in the evening. 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 chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Partly sunny, with a high near 87. South wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 86 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65. Light southeast wind.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.

    High: 83 °F

    Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 84. Light and variable wind. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 65. Calm wind.
Thursday
Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 85. Calm wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 60%. 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. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Partly sunny, with a high near 87. South wind 3 to 6 mph. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 67. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65. Light southeast wind.
Sunday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Light east wind.
Labor Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 3 to 8 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. East wind 6 to 8 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Blair WI
 44.3°N 91.22°W
Last Update:
7:21 am CDT Sep 2, 2026
Forecast Valid:
8am CDT Sep 2, 2026-6pm CDT Sep 8, 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