Boothbay Harbor, ME Weather & Growing Conditions
Tonight
46°F
Mostly Clear
Mostly clear, with a low around 46. North wind around 5 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 64°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 47°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 65°F | Chance Rain Showers | 0 to 10 mph S | 34% |
| Sunday Night | 48°F | Rain Showers Likely | 0 to 5 mph W | 55% |
| Monday | 66°F | Mostly Sunny | 5 to 10 mph N | 10% |
| Monday Night | 46°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Tuesday | 65°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Tuesday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Wednesday | 65°F | Mostly Sunny | 5 to 15 mph NE | 1% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph E | 6% |
| Thursday | 64°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 23% |
| Thursday Night | 47°F | Chance Rain Showers | 0 to 10 mph NE | 26% |
| Friday | 66°F | Chance Rain Showers | 5 to 10 mph N | 32% |
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 (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.