Boothbay Harbor, ME Weather & Growing Conditions
This Afternoon
86°F
Sunny
Sunny, with a high near 86. Southwest wind 10 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 10 to 15 mph SW | 0% |
| Tonight | 61°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 85°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 87°F | Sunny | 0 to 10 mph SW | 4% |
| Thursday Night | 68°F | Partly Cloudy | 0 to 5 mph SW | 4% |
| Friday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 17% |
| Friday Night | 69°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 21% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 10 mph NW | 34% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 31% |
| Sunday | 87°F | Mostly Sunny | 0 to 10 mph W | 6% |
| Sunday Night | 68°F | Mostly Clear | 0 to 5 mph SW | 7% |
| Monday | 88°F | Sunny | 0 to 10 mph SW | 11% |
| Monday Night | 67°F | Slight Chance Rain Showers | 0 to 10 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Boothbay Harbor, ME
Last spring frost
Apr 28
First fall frost
Oct 21
Growing season
175 days
Hardiness zone
6a
Explore more for Boothbay Harbor, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Westport Island, Me (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.