Coleraine, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coleraine, a city in Itasca County, Minnesota.
Tonight
46°F
Rain
Rain. Cloudy. Low around 46, with temperatures rising to around 49 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 Coleraine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Rain | 10 to 15 mph N | 85% |
| Wednesday | 49°F | Rain | 15 mph N | 91% |
| Wednesday Night | 36°F | Light Rain | 15 mph N | 83% |
| Thursday | 41°F | Mostly Cloudy | 10 to 15 mph N | 4% |
| Thursday Night | 25°F | Partly Cloudy | 0 to 10 mph NE | 0% |
| Friday | 41°F | Mostly Sunny | 0 mph | 0% |
| Friday Night | 25°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Saturday | 48°F | Mostly Sunny | 5 to 10 mph SW | 4% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 13% |
| Sunday | 51°F | Mostly Sunny | 5 to 10 mph W | 9% |
| Sunday Night | 32°F | Partly Cloudy | 5 mph SW | 1% |
| Monday | 52°F | Partly Sunny | 5 to 15 mph SW | 2% |
| Monday Night | 33°F | Mostly Clear | 5 to 10 mph W | 0% |
| Tuesday | 48°F | Mostly Sunny | 5 to 10 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Coleraine (47.259, -93.454). Updated through the day.
Growing snapshot for Coleraine
Last spring frost
May 17
First fall frost
Sep 24
Growing season
130 days
Hardiness zone
4a
More local growing data for Coleraine: nearby ZIP 55722 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Grand Rpds Forest Lab, Mn (4 mi from Coleraine). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.