Isle, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Isle, a city in Mille Lacs County, Minnesota.
Today
71°F
Mostly Sunny
Mostly sunny, with a high near 71. Northwest wind around 10 mph.
7-day forecast for Isle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Mostly Sunny | 10 mph NW | 0% |
| Tonight | 52°F | Mostly Clear | 0 to 10 mph W | 0% |
| Wednesday | 76°F | Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 5 to 10 mph SW | 3% |
| Thursday | 81°F | Sunny | 10 to 15 mph SW | 4% |
| Thursday Night | 62°F | Mostly Clear | 10 mph SSW | 7% |
| Friday | 83°F | Sunny | 5 to 10 mph SW | 10% |
| Friday Night | 60°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 23% |
| Saturday | 81°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 18% |
| Saturday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph NNE | 42% |
| Sunday | 79°F | Chance Showers And Thunderstorms | 5 mph NNE | 27% |
| Sunday Night | 59°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 15% |
| Monday | 78°F | Slight Chance Showers And Thunderstorms | 5 mph NNE | 18% |
| Monday Night | 59°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph NNE | 19% |
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 Aug 4, 2026.