Belfast, ME Weather & Growing Conditions
Today
82°F
Sunny
Sunny, with a high near 82. West wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 10 to 15 mph W | 0% |
| Tonight | 61°F | Mostly Clear | 0 to 10 mph W | 0% |
| Wednesday | 85°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 63°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Thursday | 88°F | Sunny | 0 to 5 mph SW | 5% |
| Thursday Night | 67°F | Partly Cloudy | 0 to 5 mph SW | 5% |
| Friday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 29% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 5 mph W | 28% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 41% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 37% |
| Sunday | 87°F | Sunny | 0 to 5 mph W | 11% |
| Sunday Night | 66°F | Mostly Clear | 5 mph SW | 11% |
| Monday | 86°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph W | 17% |
| Monday Night | 64°F | Slight Chance Rain Showers | 5 to 10 mph W | 20% |
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 Aug 4, 2026.