Isle, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Isle, a city in Mille Lacs County, Minnesota.
Overnight
55°F
Slight Chance Drizzle
A slight chance of drizzle. Cloudy, with a low around 55. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Isle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Slight Chance Drizzle | 5 mph E | 21% |
| Saturday | 61°F | Slight Chance Drizzle then Cloudy | 5 mph ENE | 19% |
| Saturday Night | 52°F | Mostly Cloudy | 5 mph NE | 3% |
| Sunday | 62°F | Mostly Cloudy | 5 to 10 mph NE | 2% |
| Sunday Night | 43°F | Mostly Cloudy | 5 to 10 mph ENE | 0% |
| Monday | 63°F | Mostly Sunny | 5 mph E | 1% |
| Monday Night | 40°F | Mostly Clear | 5 mph E | 1% |
| Tuesday | 63°F | Sunny | 5 mph ESE | 1% |
| Tuesday Night | 40°F | Mostly Clear | 0 to 5 mph ESE | 1% |
| Wednesday | 65°F | Sunny | 5 mph SE | 0% |
| Wednesday Night | 44°F | Mostly Clear | 0 to 5 mph SE | 6% |
| Thursday | 66°F | Mostly Sunny | 0 to 5 mph SE | 7% |
| Thursday Night | 47°F | Partly Cloudy | 0 to 5 mph SE | 6% |
| Friday | 69°F | Mostly Sunny | 0 to 5 mph SSE | 4% |
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 Sep 19, 2026.