Winter Harbor, ME Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winter Harbor, a community in Hancock County, Maine.
Today
78°F
Sunny
Sunny, with a high near 78. Southwest wind around 16 mph, with gusts as high as 31 mph.
7-day forecast for Winter Harbor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Sunny | 16 mph SW | 0% |
| Tonight | 62°F | Mostly Clear | 3 to 14 mph W | 0% |
| Wednesday | 79°F | Mostly Sunny | 2 to 10 mph SW | 0% |
| Wednesday Night | 61°F | Partly Cloudy then Patchy Fog | 1 to 8 mph SW | 3% |
| Thursday | 75°F | Patchy Fog then Mostly Sunny | 1 to 8 mph SW | 3% |
| Thursday Night | 63°F | Partly Cloudy then Patchy Fog | 1 to 7 mph SW | 7% |
| Friday | 77°F | Patchy Fog then Mostly Sunny | 1 to 9 mph S | 7% |
| Friday Night | 64°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 22% |
| Saturday | 77°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph SW | 20% |
| Saturday Night | 63°F | Slight Chance Showers And Thunderstorms | 2 to 8 mph SW | 20% |
| Sunday | 76°F | Mostly Sunny | 2 to 10 mph SW | 8% |
| Sunday Night | 63°F | Partly Cloudy | 5 to 9 mph SW | 7% |
| Monday | 77°F | Mostly Sunny | 5 to 12 mph SW | 9% |
| Monday Night | 63°F | Slight Chance Rain Showers | 5 to 10 mph W | 20% |
Forecast source: National Weather Service (api.weather.gov) for Winter Harbor (44.393, -68.092). Updated through the day.
Growing snapshot for Winter Harbor
Last spring frost
Apr 27
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
6a
More local growing data for Winter Harbor: nearby ZIP 04693 weather · frost dates · planting calendar · Maine frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Acadia Np, Me (8.2 mi from Winter Harbor). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.