Coleraine, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coleraine, a city in Itasca County, Minnesota.
Today
70°F
Mostly Sunny
Mostly sunny, with a high near 70. West wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Coleraine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny | 5 to 10 mph W | 0% |
| Tonight | 48°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 75°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 0 to 5 mph SW | 12% |
| Thursday | 81°F | Sunny | 10 mph SW | 12% |
| Thursday Night | 60°F | Mostly Clear | 5 to 10 mph SW | 11% |
| Friday | 81°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 16% |
| Friday Night | 56°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 21% |
| Saturday | 77°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 25% |
| Saturday Night | 56°F | Chance Rain Showers | 0 to 5 mph N | 25% |
| Sunday | 75°F | Slight Chance Rain Showers | 0 to 5 mph N | 19% |
| Sunday Night | 56°F | Partly Cloudy | 0 to 5 mph N | 12% |
| Monday | 76°F | Partly Sunny | 0 to 5 mph N | 14% |
| Monday Night | 56°F | Slight Chance Rain Showers | 0 to 5 mph N | 17% |
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 Aug 4, 2026.