Cohasset, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cohasset, a city in Itasca County, Minnesota.
Tonight
46°F
Light Rain
Rain. Cloudy. Low around 46, with temperatures rising to around 48 overnight. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Cohasset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Light Rain | 10 to 15 mph N | 88% |
| Wednesday | 49°F | Light Rain | 10 to 15 mph N | 95% |
| Wednesday Night | 35°F | Light Rain | 10 to 15 mph N | 67% |
| Thursday | 41°F | Mostly Cloudy | 5 to 15 mph N | 4% |
| Thursday Night | 25°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 41°F | Mostly Sunny | 0 mph | 0% |
| Friday Night | 25°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Saturday | 49°F | Partly Sunny | 5 mph SW | 5% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 13% |
| Sunday | 51°F | Mostly Sunny | 5 mph W | 10% |
| Sunday Night | 32°F | Partly Cloudy | 0 to 5 mph SW | 1% |
| Monday | 53°F | Partly Sunny | 5 to 10 mph SW | 2% |
| Monday Night | 33°F | Partly Cloudy | 5 to 10 mph W | 0% |
| Tuesday | 49°F | Mostly Sunny | 5 mph W | 1% |
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 Nov 4, 2026.