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
62°F
Slight Chance Rain Showers
A slight chance of rain showers. Mostly cloudy, with a high near 62. Southeast wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
7-day forecast for Boy River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Slight Chance Rain Showers | 5 mph SE | 21% |
| Tonight | 49°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph E | 27% |
| Saturday | 68°F | Patchy Fog then Mostly Cloudy | 0 to 5 mph NE | 4% |
| Saturday Night | 48°F | Patchy Fog then Mostly Cloudy | 0 to 5 mph N | 2% |
| Sunday | 64°F | Partly Sunny | 5 mph NE | 0% |
| Sunday Night | 41°F | Mostly Cloudy | 0 to 5 mph E | 0% |
| Monday | 63°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Monday Night | 39°F | Mostly Clear | 0 to 5 mph E | 0% |
| Tuesday | 64°F | Sunny | 0 to 5 mph SE | 0% |
| Tuesday Night | 40°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Wednesday | 65°F | Mostly Sunny | 0 to 5 mph SE | 1% |
| Wednesday Night | 45°F | Partly Cloudy | 0 mph | 13% |
| Thursday | 68°F | Partly Sunny | 0 to 5 mph S | 13% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 8% |
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 Sep 18, 2026.