Black River Falls, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Black River Falls, a city in Jackson County, Wisconsin.
This Afternoon
67°F
Rain Showers
Rain showers. Cloudy. High near 67, with temperatures falling to around 65 in the afternoon. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Black River Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Rain Showers | 9 mph S | 85% |
| Tonight | 54°F | Rain Showers | 7 mph SE | 97% |
| Wednesday | 59°F | Rain Showers | 5 to 12 mph S | 87% |
| Wednesday Night | 43°F | Rain Showers | 12 mph SW | 99% |
| Thursday | 50°F | Rain Showers Likely | 8 to 12 mph NW | 70% |
| Thursday Night | 32°F | Mostly Cloudy | 7 to 12 mph N | 13% |
| Friday | 49°F | Partly Sunny | 1 to 8 mph N | 1% |
| Friday Night | 26°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph W | 1% |
| Saturday Night | 30°F | Partly Cloudy | 1 mph W | 6% |
| Sunday | 57°F | Slight Chance Rain Showers | 1 to 7 mph W | 16% |
| Sunday Night | 31°F | Mostly Clear | 0 to 3 mph W | 3% |
| Monday | 60°F | Mostly Sunny | 1 to 10 mph SW | 0% |
| Monday Night | 34°F | Partly Cloudy | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Black River Falls (44.298, -90.843). Updated through the day.
Growing snapshot for Black River Falls
Last spring frost
May 9
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
4b
More local growing data for Black River Falls: nearby ZIP 54615 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Blair, Wi (22.1 mi from Black River Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.