Northeast Harbor has cold winters and pleasant summers, with plenty of rain
A typical July afternoon reaches 77°, a January night drops to 14°.
A year in Northeast Harbor at a glance
Each month’s typical high and low, and what it brings.
What stands out about Northeast Harbor’s climate
Read from where Northeast Harbor sits among Maine’s towns. The page puts what stands out first.
Living with Northeast Harbor’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
177 frost-free days. The last frost comes by Apr 27 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 22.
Months averaging under 55° run from October through May. Heating is 94% of the year’s heating-and-cooling load.
About 3 days a year reach 90°, and July afternoons average 77°.
The nicest months are June, July, August and September.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Rain and snow in Northeast Harbor
October is the wettest month and August the driest.
Rain + melted snow by month
Inches of water
Snowfall by month
No snow records from a nearby station.
What a year in Northeast Harbor feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 177 frost-free days a year
In half of years the last 32° night comes by April 27 and the first by October 22.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Northeast Harbor and its neighbors
Mount Desert has the coldest January nights next door (14°) and Mount Desert the hottest July afternoons (77°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Northeast Harbor averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 79% of U.S. towns.
Change by month
How Northeast Harbor compares
Against every U.S. town on TownTapestry, each counted once, with its place in Maine.
Northeast Harbor weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 31° | 14° | 4.3" | 13° – 30° |
| February | 33° | 16° | 3.5" | 10° – 30° |
| March | 40° | 24° | 4.3" | 25° – 39° |
| April | 51° | 34° | 4.5" | 39° – 48° |
| May | 62° | 44° | 3.8" | 47° – 57° |
| June | 71° | 52° | 4.2" | 58° – 65° |
| July | 77° | 58° | 3.2" | 63° – 70° |
| August | 76° | 58° | 3.1" | 63° – 70° |
| September | 68° | 51° | 3.9" | 56° – 64° |
| October | 56° | 41° | 5.6" | 44° – 55° |
| November | 46° | 32° | 5.1" | 34° – 44° |
| December | 37° | 22° | 5.3" | 22° – 36° |
| Year | 54° | 37° | 50.8" |
Heating and cooling a home in Northeast Harbor
94% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 10° to 30°. August is the most reliable, staying within 6°.
Common questions about Northeast Harbor’s climate
What is the coldest month in Northeast Harbor?
January, with a typical high of 31° and a low of 14°.
What is the hottest month in Northeast Harbor?
July, with a typical high of 77° and a low of 58°. About 3 days a year reach 90°.
When is the first frost in Northeast Harbor?
In half of years the first 32° night comes by October 22, and the last spring frost by April 27.
What is the rainiest month in Northeast Harbor?
October, with 5.6 inches of rain and melted snow. The year totals 51 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Northeast Harbor.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Northeast Harbor itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Acadia Np, ME (6 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.