Cass Lake, MN Weather & Growing Conditions
Overnight
51°F
Mostly Cloudy
Mostly cloudy. Low around 51, with temperatures rising to around 53 overnight. East wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Cloudy | 0 to 5 mph E | 5% |
| Saturday | 68°F | Mostly Cloudy | 0 to 5 mph NE | 3% |
| Saturday Night | 50°F | Mostly Cloudy | 5 mph N | 2% |
| Sunday | 63°F | Partly Sunny | 5 mph NE | 0% |
| Sunday Night | 42°F | Mostly Cloudy | 5 mph E | 0% |
| Monday | 63°F | Sunny | 5 mph E | 1% |
| Monday Night | 41°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Tuesday | 64°F | Sunny | 0 to 5 mph SE | 0% |
| Tuesday Night | 43°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Wednesday | 65°F | Mostly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph S | 13% |
| Thursday | 68°F | Partly Sunny | 0 to 5 mph S | 13% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph S | 8% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph S | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cass Lake, MN
Last spring frost
May 17
First fall frost
Sep 26
Growing season
131 days
Hardiness zone
3b
Explore more for Cass Lake, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Cass Lake, Mn (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.