Belfast, ME Weather & Growing Conditions
Overnight
49°F
Cloudy
Cloudy, with a low around 49. South wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Cloudy | 0 mph | 5% |
| Wednesday | 65°F | Partly Sunny | 0 to 5 mph SW | 7% |
| Wednesday Night | 51°F | Partly Cloudy | 5 mph SW | 4% |
| Thursday | 64°F | Mostly Cloudy then Slight Chance Light Rain | 5 to 15 mph SW | 19% |
| Thursday Night | 55°F | Chance Light Rain | 5 to 10 mph SW | 35% |
| Friday | 64°F | Light Rain Likely | 0 to 5 mph S | 61% |
| Friday Night | 51°F | Light Rain | 0 to 10 mph SE | 95% |
| Saturday | 58°F | Light Rain | 10 mph E | 90% |
| Saturday Night | 46°F | Light Rain Likely | 5 to 10 mph NE | 58% |
| Sunday | 54°F | Chance Light Rain | 5 to 10 mph NW | 51% |
| Sunday Night | 41°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 18% |
| Monday | 52°F | Mostly Sunny then Chance Light Rain | 5 to 10 mph W | 25% |
| Monday Night | 38°F | Slight Chance Light Rain then Partly Cloudy | 10 mph W | 23% |
| Tuesday | 52°F | Mostly Sunny | 10 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Belfast, ME
Last spring frost
May 7
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a
Explore more for Belfast, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Belfast, Me (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.