Cass Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cass Lake, a city in Cass County, Minnesota.
Tonight
51°F
Mostly Cloudy
Mostly cloudy, with a low around 51. East wind around 5 mph.
7-day forecast for Cass Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Cloudy | 5 mph E | 2% |
| Saturday | 69°F | Mostly Cloudy | 5 mph NE | 1% |
| Saturday Night | 49°F | Mostly Cloudy | 5 mph NE | 0% |
| Sunday | 64°F | Partly Sunny | 5 mph NE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 5 mph E | 0% |
| Monday | 63°F | Mostly Sunny | 5 mph SE | 0% |
| Monday Night | 41°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Tuesday | 64°F | Sunny | 5 mph SE | 0% |
| Tuesday Night | 43°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 65°F | Mostly Sunny | 5 mph S | 2% |
| Wednesday Night | 47°F | Partly Cloudy | 5 mph S | 12% |
| Thursday | 69°F | Partly Sunny | 5 mph S | 12% |
| Thursday Night | 50°F | Partly Cloudy | 5 mph S | 8% |
| Friday | 70°F | Mostly Sunny | 5 mph S | 6% |
Forecast source: National Weather Service (api.weather.gov) for Cass Lake (47.380, -94.599). Updated through the day.
Growing snapshot for Cass Lake
Last spring frost
May 17
First fall frost
Sep 26
Growing season
131 days
Hardiness zone
3b
More local growing data for Cass Lake: nearby ZIP 56633 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Backus
Bena
Boy River
Chickamaw Beach
Federal Dam
Hackensack
Jenkins
Longville
Motley
Pequot Lakes
Pillager
Pine River
Remer
Walker
Whipholt
Climate data from the nearest NOAA station, Cass Lake, Mn (7 mi from Cass Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.