54615 Weather (Black River Falls, WI)

Weather forecast for: Black River Falls WI

Last Update: 10:41 am CDT Sep 16, 2026

Today: Mostly sunny, with a high near 75. East wind 3 to 5 mph.

Tonight: A chance of showers between 10pm and 4am. Increasing clouds, with a low around 54. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Thursday: Partly sunny, with a high near 75. Calm wind.

Thursday Night: A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 51. Calm wind.

Friday: Showers, with thunderstorms also possible after 4pm. High near 65. Light east wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Friday Night: Showers and possibly a thunderstorm. Low around 52. East wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Saturday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 70. Northeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

Saturday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 50. Northeast wind 5 to 9 mph becoming light. Winds could gust as high as 20 mph.

Sunday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 68. East wind 6 to 9 mph, with gusts as high as 18 mph.

Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 48. East wind 3 to 8 mph.

Monday: A 30 percent chance of showers. Mostly cloudy, with a high near 67. East wind 5 to 8 mph.

Monday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 48. East wind around 6 mph becoming calm in the evening.

Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 71. Calm wind becoming east around 6 mph in the afternoon.