Belfast, ME Weather & Growing Conditions
This Afternoon
56°F
Scattered Rain Showers
Scattered rain showers. Cloudy, with a high near 56. Southeast wind around 5 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Scattered Rain Showers | 5 mph SE | 37% |
| Tonight | 48°F | Scattered Rain Showers | 0 to 5 mph SE | 45% |
| Wednesday | 69°F | Partly Sunny | 0 to 5 mph SW | 9% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph SW | 5% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph SW | 10% |
| Thursday Night | 56°F | Mostly Cloudy | 5 to 10 mph SW | 14% |
| Friday | 65°F | Light Rain Likely | 0 to 5 mph S | 57% |
| Friday Night | 50°F | Light Rain | 0 to 10 mph E | 87% |
| Saturday | 56°F | Light Rain | 5 to 10 mph NE | 83% |
| Saturday Night | 44°F | Light Rain Likely | 10 mph N | 67% |
| Sunday | 54°F | Chance Light Rain | 5 to 10 mph NW | 45% |
| Sunday Night | 38°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 22% |
| Monday | 52°F | Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Monday Night | 36°F | Slight Chance Light Rain | 10 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Belfast, ME
Last spring frost
Apr 27
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
5b
Explore more for Belfast, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, W Rockport 1 Nnw, Me (15.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.