Cass Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cass Lake, a city in Cass County, Minnesota.
This Afternoon
53°F
Slight Chance Drizzle
A slight chance of drizzle after 2pm. Cloudy. High near 53, with temperatures falling to around 50 in the afternoon. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Cass Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Slight Chance Drizzle | 10 mph N | 16% |
| Tonight | 45°F | Rain | 10 to 15 mph N | 77% |
| Wednesday | 48°F | Rain | 10 to 15 mph N | 88% |
| Wednesday Night | 37°F | Chance Light Rain then Mostly Cloudy | 15 mph N | 52% |
| Thursday | 41°F | Partly Sunny | 5 to 15 mph N | 1% |
| Thursday Night | 29°F | Partly Cloudy | 0 to 5 mph E | 0% |
| Friday | 42°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Saturday | 51°F | Mostly Sunny | 5 mph SW | 9% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 14% |
| Sunday | 52°F | Mostly Sunny | 5 mph W | 12% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph S | 2% |
| Monday | 54°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 34°F | Mostly Clear | 5 to 10 mph W | 1% |
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
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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 Nov 3, 2026.