Boothbay Harbor, ME Weather & Growing Conditions
Today
68°F
Mostly Sunny
Mostly sunny. High near 68, with temperatures falling to around 61 in the afternoon. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Mostly Sunny | 5 to 10 mph SW | 4% |
| Tonight | 52°F | Partly Cloudy | 5 mph SW | 3% |
| Thursday | 66°F | Mostly Cloudy then Chance Light Rain | 10 to 15 mph SW | 35% |
| Thursday Night | 55°F | Slight Chance Light Rain | 5 to 10 mph SW | 19% |
| Friday | 67°F | Light Rain Likely | 0 to 5 mph S | 64% |
| Friday Night | 50°F | Light Rain | 0 to 5 mph SE | 94% |
| Saturday | 60°F | Light Rain | 5 to 10 mph E | 85% |
| Saturday Night | 43°F | Chance Light Rain | 5 mph N | 44% |
| Sunday | 55°F | Chance Light Rain | 5 to 10 mph NW | 39% |
| Sunday Night | 36°F | Slight Chance Light Rain then Partly Cloudy | 0 to 5 mph W | 16% |
| Monday | 53°F | Chance Light Rain | 5 to 15 mph W | 25% |
| Monday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 22% |
| Tuesday | 54°F | Mostly Sunny | 5 to 10 mph W | 11% |
| Tuesday Night | 31°F | Partly Cloudy | 5 mph W | 9% |
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 Nov 4, 2026.