Cass Lake, MN Weather & Growing Conditions
This Afternoon
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 60 in the afternoon. North northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Partly Sunny | 3 mph NNE | 3% |
| Tonight | 49°F | Isolated Rain Showers then Mostly Cloudy | 3 mph NNE | 20% |
| Sunday | 64°F | Partly Sunny | 5 mph NE | 0% |
| Sunday Night | 44°F | Mostly Cloudy | 3 mph E | 0% |
| Monday | 63°F | Mostly Sunny | 3 mph ESE | 0% |
| Monday Night | 38°F | Mostly Clear | 2 mph SE | 0% |
| Tuesday | 64°F | Sunny | 1 to 5 mph SE | 0% |
| Tuesday Night | 40°F | Clear | 3 mph SE | 0% |
| Wednesday | 65°F | Sunny | 2 to 7 mph SSE | 0% |
| Wednesday Night | 45°F | Mostly Clear | 5 mph SSE | 7% |
| Thursday | 66°F | Chance Rain Showers | 6 mph SSE | 31% |
| Thursday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 1 to 5 mph SSE | 29% |
| Friday | 71°F | Partly Sunny | 1 to 5 mph S | 4% |
| Friday Night | 53°F | Partly Cloudy | 3 mph SSE | 9% |
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 (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.