Isle, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Isle, a city in Mille Lacs County, Minnesota.
This Afternoon
55°F
Light Rain
Rain and patchy fog. Mostly cloudy, with a high near 55. North wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Isle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Light Rain | 10 to 15 mph N | 100% |
| Tonight | 47°F | Rain | 15 mph NNE | 90% |
| Wednesday | 51°F | Rain | 15 mph N | 99% |
| Wednesday Night | 40°F | Light Rain | 15 to 20 mph N | 90% |
| Thursday | 44°F | Mostly Cloudy | 10 to 20 mph N | 14% |
| Thursday Night | 30°F | Partly Cloudy | 5 to 10 mph NE | 0% |
| Friday | 42°F | Mostly Sunny | 0 to 5 mph ESE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 49°F | Mostly Sunny | 0 to 10 mph SW | 3% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 13% |
| Sunday | 52°F | Mostly Sunny | 5 to 10 mph WNW | 9% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph SSW | 0% |
| Monday | 54°F | Mostly Sunny | 5 to 10 mph WSW | 1% |
| Monday Night | 36°F | Mostly Clear | 5 to 10 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Isle (46.138, -93.456). Updated through the day.
Growing snapshot for Isle
Last spring frost
May 10
First fall frost
Oct 3
Growing season
144 days
Hardiness zone
4a
More local growing data for Isle: nearby ZIP 56386 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Isle 12N, Mn (14.2 mi from Isle). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.