Cohasset, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cohasset, a city in Itasca County, Minnesota.
Today
70°F
Mostly Sunny
Mostly sunny, with a high near 70. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Cohasset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny | 5 to 10 mph NW | 0% |
| Tonight | 48°F | Mostly Clear | 0 to 5 mph W | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 0 to 5 mph SW | 11% |
| Thursday | 81°F | Sunny | 5 to 10 mph SW | 11% |
| Thursday Night | 60°F | Mostly Clear | 5 mph SW | 11% |
| Friday | 81°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 17% |
| Friday Night | 56°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 23% |
| Saturday | 77°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 25% |
| Saturday Night | 56°F | Slight Chance Rain Showers | 0 to 5 mph N | 24% |
| Sunday | 76°F | Slight Chance Rain Showers | 0 to 5 mph N | 18% |
| Sunday Night | 56°F | Partly Cloudy | 0 to 5 mph N | 14% |
| Monday | 76°F | Slight Chance Rain Showers | 0 to 5 mph N | 15% |
| Monday Night | 56°F | Slight Chance Rain Showers | 0 to 5 mph N | 18% |
Forecast source: National Weather Service (api.weather.gov) for Cohasset (47.242, -93.664). Updated through the day.
Growing snapshot for Cohasset
Last spring frost
May 16
First fall frost
Oct 1
Growing season
138 days
Hardiness zone
4a
More local growing data for Cohasset: nearby ZIP 55721 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Pokegama Dam, Mn (5 mi from Cohasset). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.