Cass Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cass Lake, a city in Cass County, Minnesota.
Today
71°F
Sunny
Sunny, with a high near 71. West wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Cass Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Sunny | 10 mph W | 0% |
| Tonight | 50°F | Mostly Clear | 0 to 10 mph W | 0% |
| Wednesday | 77°F | Sunny | 5 mph SW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 5 mph SW | 14% |
| Thursday | 82°F | Sunny | 5 to 10 mph SW | 14% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SW | 11% |
| Friday | 82°F | Sunny | 5 mph W | 13% |
| Friday Night | 56°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 15% |
| Saturday | 80°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 16% |
| Saturday Night | 57°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 23% |
| Sunday | 79°F | Slight Chance Rain Showers | 0 to 5 mph N | 16% |
| Sunday Night | 57°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 19% |
| Monday | 78°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 19% |
| Monday Night | 57°F | Slight Chance Rain Showers | 0 to 5 mph N | 18% |
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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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 Aug 4, 2026.