Boy River, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boy River, a city in Cass County, Minnesota.
This Afternoon
54°F
Patchy Fog
Patchy fog and a slight chance of drizzle before 5pm, then a chance of drizzle and patchy fog. Cloudy. High near 54, with temperatures falling to around 52 in the afternoon. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Boy River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 54°F | Patchy Fog | 10 mph N | 25% |
| Tonight | 45°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% |
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.