Belfast, ME
Climate overview — based on NOAA 1991-2020 normals from BELFAST, ME US.
Year-round temperatures (°F)
Climate summary
Belfast has an annual average temperature of 44.1°F with about 48.8 inches of precipitation per year and 71.5 inches of snow. The warmest month is July (average high 77.0°F), and the coldest is January (average low 10.2°F). October is typically the wettest month (5.38 in) and August the driest (3.06 in). Snow typically falls from October through April.
Best time to visit Belfast
Full guide →Climate change signal
All-time records →21 of 366 (5.7%) of Belfast's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 0 | |
| 1900s | 9 | |
| 1940s | 55 | |
| 1950s | 54 | |
| 1960s | 42 | |
| 1970s | 64 | |
| 1980s | 31 | |
| 1990s | 45 | |
| 2000s | 27 | |
| 2010s | 27 | |
| 2020s | 12 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 29.5°F | 10.2°F | 19.8°F | 3.94 in | 19.2 in | 9 |
| February | 32.2°F | 11.7°F | 21.9°F | 3.16 in | 22.4 in | 7 |
| March | 39.7°F | 20.4°F | 30.1°F | 4.12 in | 11.7 in | 8 |
| April | 51.5°F | 31.1°F | 41.3°F | 4.38 in | 2.2 in | 10 |
| May | 62.9°F | 41.3°F | 52.1°F | 3.86 in | — | 10 |
| June | 71.5°F | 50.5°F | 61.0°F | 4.28 in | — | 10 |
| July | 77.0°F | 56.6°F | 66.8°F | 3.17 in | — | 9 |
| August | 76.4°F | 55.5°F | 66.0°F | 3.06 in | — | 8 |
| September | 69.5°F | 48.1°F | 58.8°F | 4.09 in | — | 7 |
| October | 57.4°F | 37.9°F | 47.7°F | 5.38 in | 0.3 in | 10 |
| November | 45.6°F | 28.8°F | 37.2°F | 4.69 in | 2.5 in | 9 |
| December | 34.9°F | 18.4°F | 26.6°F | 4.65 in | 13.2 in | 10 |
Climate twins of Belfast
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).