Boy River, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boy River, a city in Cass County, Minnesota.
Tonight
46°F
Rain
Rain. Cloudy, with a low around 46. North wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Boy River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Rain | 5 to 10 mph N | 84% |
| Wednesday | 49°F | Rain | 10 mph N | 91% |
| Wednesday Night | 34°F | Light Rain Likely | 10 mph N | 66% |
| Thursday | 42°F | Mostly Cloudy | 5 to 10 mph N | 2% |
| Thursday Night | 25°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 42°F | Mostly Sunny | 0 mph | 0% |
| Friday Night | 25°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph SW | 8% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 14% |
| Sunday | 53°F | Mostly Sunny | 5 mph W | 12% |
| Sunday Night | 33°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Monday | 54°F | Partly Sunny | 5 to 10 mph SW | 2% |
| Monday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Tuesday | 50°F | Mostly Sunny | 0 to 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Boy River (47.168, -94.124). Updated through the day.
Growing snapshot for Boy River
Last spring frost
May 8
First fall frost
Oct 1
Growing season
144 days
Hardiness zone
3b
More local growing data for Boy River: nearby ZIP 56641 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Backus
Bena
Cass Lake
Chickamaw Beach
Federal Dam
Hackensack
Jenkins
Longville
Motley
Pequot Lakes
Pillager
Pine River
Remer
Walker
Whipholt
Climate data from the nearest NOAA station, Leech Lake, Mn (3.6 mi from Boy River). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.