Winter Harbor, ME Weather & Growing Conditions
Today
59°F
Sunny
Sunny, with a high near 59. Northwest wind 6 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Sunny | 6 to 10 mph NW | 0% |
| Tonight | 50°F | Partly Cloudy | 5 mph N | 0% |
| Sunday | 56°F | Mostly Cloudy then Chance Rain Showers | 3 to 12 mph SE | 27% |
| Sunday Night | 50°F | Rain Showers Likely | 3 to 7 mph E | 72% |
| Monday | 59°F | Patchy Fog then Mostly Sunny | 8 to 12 mph N | 11% |
| Monday Night | 47°F | Partly Cloudy | 10 mph N | 0% |
| Tuesday | 58°F | Mostly Sunny | 3 to 10 mph NE | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 2 to 8 mph NE | 0% |
| Wednesday | 57°F | Sunny | 5 to 8 mph NE | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 1 to 5 mph NE | 1% |
| Thursday | 57°F | Mostly Sunny then Slight Chance Rain Showers | 7 mph NE | 19% |
| Thursday Night | 49°F | Chance Rain Showers | 5 to 12 mph NE | 31% |
| Friday | 59°F | Chance Rain Showers | 13 to 18 mph NE | 30% |
| Friday Night | 50°F | Chance Rain Showers | 21 mph NE | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winter Harbor, ME
Last spring frost
Apr 27
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
6a
Explore more for Winter Harbor, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Acadia Np, Me (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.