Cohasset, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cohasset, a city in Itasca County, Minnesota.
This Afternoon
67°F
Mostly Cloudy
Mostly cloudy. High near 67, with temperatures falling to around 65 in the afternoon. North wind around 5 mph.
7-day forecast for Cohasset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Mostly Cloudy | 5 mph N | 1% |
| Tonight | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph N | 20% |
| Sunday | 63°F | Partly Sunny | 5 mph NE | 0% |
| Sunday Night | 39°F | Mostly Cloudy | 0 to 5 mph E | 0% |
| Monday | 61°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Monday Night | 35°F | Mostly Clear then Patchy Frost | 0 to 5 mph SE | 0% |
| Tuesday | 63°F | Patchy Frost then Sunny | 0 to 5 mph SE | 0% |
| Tuesday Night | 39°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Wednesday | 64°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 43°F | Mostly Clear | 5 mph SE | 5% |
| Thursday | 65°F | Chance Rain Showers | 5 to 10 mph SE | 25% |
| Thursday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph SE | 24% |
| Friday | 70°F | Partly Sunny | 0 to 5 mph S | 4% |
| Friday Night | 51°F | Partly Cloudy | 0 to 5 mph S | 6% |
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 Sep 20, 2026.