Boothbay Harbor, ME Weather & Growing Conditions
This Afternoon
79°F
Sunny
Sunny, with a high near 79. Northwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 15 mph NW | 0% |
| Tonight | 45°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Saturday | 65°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 46°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Sunday | 66°F | Chance Rain Showers | 0 to 10 mph S | 34% |
| Sunday Night | 47°F | Chance Rain Showers | 0 to 5 mph W | 54% |
| Monday | 67°F | Mostly Sunny | 5 to 10 mph N | 9% |
| Monday Night | 45°F | Partly Cloudy | 5 mph N | 0% |
| Tuesday | 66°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Tuesday Night | 45°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 45°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Thursday | 65°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 23% |
| Thursday Night | 46°F | Chance Rain Showers | 0 to 10 mph NE | 26% |
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 Sep 19, 2026.