Climate and monthly weather forecastEastport, ME
Climate and monthly weather forecast
The climate of Eastport
Eastport, Maine falls within the Dfb Köppen climate classification. It is predominantly characterized by a humid continental climate with no dry season and a warm summer. Geographically, Eastport lies on the easternmost tip of the United States, significantly exposed to climatic influences from the Atlantic.Throughout the year, the city experiences a substantial degree of weather variation. Temperature fluctuations range from a low of 19.9°F (-6.7°C) in January to a high of 67.8°F (19.9°C) in August. This change indicates substantial seasonality with frosty winters and mild, occasionally warm, summers. Opportunities for rain in Eastport are relatively evenly distributed throughout the year. Rainfall inches range from 1.65 in August to 3.23 in December, featuring approximately 14.1 rainfall days at their peak in July and May, reflecting a balance of precipitation.
Eastport experiences a balanced degree of relative humidity, fluctuating around 80% throughout the year. Notable increases in daylight and sunshine hours are evident as the seasons transition from winter to summer, stretching from 8.8 hours of daylight in December to 15.6 hours in June. The city's exposure to strong winds is consistently high, peaking at 13.9mph (22.4km/h) in January.
The best time to visit Eastport
The optimal time to visit Eastport largely depends on the preferred weather conditions for outdoor activities. Generally, the period from June to September offers the most conducive conditions. During this time, the temperature consistently exceeds 59.9°F (15.5°C), reaching up to 67.8°F (19.9°C) in August, complemented by a low of 51.3°F (10.7°C). This period also boasts the most prolonged daylight hours, ranging from 14 to 15.6 hours. Coupled with an average of 8.4 to 9.3 sunshine hours and relative humidity levels at around 82%, the conditions accommodate a comfortable outdoor experience.The worst time to visit Eastport
Considering the cold and harsh winter conditions, the least favorable time to visit Eastport falls between December and February. The chilling low temperature drops to 19.9°F (-6.7°C) in January, making outdoor activities extremely difficult. Additionally, daylight and sunshine hours are at their lowest during this season, ranging from 8.8 to 10.5 hours and 3.6 to 4 hours, respectively.Spring weather in Eastport
Spring in Eastport, spanning March to May, signifies a significant transition from the harsh cold of winter months. Average high temperatures rise progressively from 36.3°F (2.4°C) in March to a comfortable 53.2°F (11.8°C) by May. While rainfall begins to increase, with May experiencing 16 rainfall days, overall precipitation remains moderate, ranging from 2.01" (51mm) in March to 2.56" (65mm) in May.Summer weather in Eastport
Summer months bring about the warmest weather in Eastport. June starts with an average high temperature of 59.9°F (15.5°C), rising up to 67.8°F (19.9°C) by August. This period also experiences longer daylight hours, ranging from 14.9 to 15.6 hours, leading to increased sunshine hours, offering between 8.4 to 9.3 hours of potential sun. However, relative humidity stays relatively high, around 82-83%.Autumn weather in Eastport
Autumn prevails from September to November in Eastport, marked by a gradual drop in temperature and decline in daylight hours. Average high temperatures decrease from 63.5°F (17.5°C) in September to 45.1°F (7.3°C) in November. Rainfall increases during this period, reaching the year's high-point in November with 3.03" (77mm). The number of sunshine hours reduces gradually, ranging from 7.8 in September to 4.6 in November.Winter weather in Eastport
The winter season commences in December, characterized by a rapid drop in temperatures and shorter daylight hours. Average high temperatures dip to 36.1°F (2.3°C) in December and reach the year's lowest in January at 30.6°F (-0.8°C). The city also experiences an increased number of snowfall days, peaking at 10.8 in January. Relative humidity, wind speed, and air pressure all experience slight fluctuations throughout the winter, contributing to the overall chilly and harsh environment.Weather in January
Known as the coldest month in Eastport, Maine, the city experiences its longest nights during this period. The notable feature of January is the regular snowfall with snow falling at a rate of 2.64" (67mm) while the temperature drops to a low of 19.9°F (-6.7°C). Weather in January »Weather in February
Despite being the shortest month, February offers little reprieve from the cold. The snow continues to fall, albeit at a slightly reduced rate of 2.28" (58mm). As the season progresses, the days get longer, providing much needed additional daylight for the residents of Eastport. Weather in February »Weather in March
March signals the beginning of spring and the end of the intense cold. There is a distinct shift in weather patterns as snowfall diminishes to a rate of 2.28" (58mm). The residents start to experience noticeably longer hours of daylight, which contribute to the melting snow. Weather in March »Weather in April
April in Eastport, Maine, is a time of blossoming flora and warmer weather. The highlight of this month is the absence of snowfall as temperatures continue to rise, reaching up to 45°F (7.2°C). The city witnesses more sunshine hours, which contributes to a slight decrease in humidity. Weather in April »Weather in May
May brings with it many joys as Eastport emerges into full spring. This month experiences the highest average rainfall for the first half of the year, recorded at 2.56" (65mm). The consistent rainfall amidst warmer temperatures encourages lush greenery throughout the city. Weather in May »Weather in June
June brings the onset of summer and marks the warmest period of the year in Eastport, Maine. The temperature often reaches up to 59.9°F (15.5°C), ensuring long days of mild warmth. Despite the rise in mercury, humidity remains relatively constant, creating a distinctly comfortable ambiance. Weather in June »Weather in July
July typically features the hottest weather in Eastport, Maine, with temperatures soaring to a scorching 66.9°F (19.4°C). The longer days and bright sunshine dominate the weather patterns, urging both locals and tourists to indulge in outdoor activities. Weather in July »Weather in August
August maintains the summer heat in Eastport, Maine, yet shows signs of the approaching autumn. The peak temperature slightly dips to a still warm 67.8°F (19.9°C). The balmy evenings, generous hours of daylight, and comparatively lower rainfall encourage outdoor activities. Weather in August »Weather in September
As September sets in, the vibrant colors of fall become the hallmark of Eastport. A slight drop in temperature to 63.5°F (17.5°C) along with decreasing daylight hours signals the onset of autumn. The decreasing sunshine hours yield more cloudy days. Weather in September »Weather in October
October in Eastport, Maine, welcomes the full swing of autumn. The first snowfall of the season is recorded, albeit a meager 0.08" (2mm). The fall foliage is at its peak, creating a picturesque setting against the backdrop of overcast skies. Weather in October »Weather in November
The last vestiges of autumn give way to the initial signs of winter in Eastport during November. The increasing snowfall rate to 1.69" (43mm) is an indication of the looming winter season. The foliage bids goodbye, and the sea temperature continues its downward trend. Weather in November »Weather in December
December marks the onset of winter in Eastport, Maine, with the weather progressively getting colder. Snowfall is steep at a rate of 2.17" (55mm), painting the city with a pristine white blanket. The scant daylight hours, coupled with dropping temperatures, create a cozy winter ambience. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Eastport, ME
The warmest month (with the highest average high temperature) is August (67.8°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is August (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure
Eastport, ME
- Average pressure in January:
29.93"Hg - Average pressure in February:
29.93"Hg - Average pressure in March:
29.98"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
29.98"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Eastport, ME
- Average wind speed in January:
13.9mph - Average wind speed in February:
13.8mph - Average wind speed in March:
13.8mph - Average wind speed in April:
11.6mph - Average wind speed in May:
9.7mph - Average wind speed in June:
9.1mph
- Average wind speed in July:
8mph - Average wind speed in August:
8mph - Average wind speed in September:
9.3mph - Average wind speed in October:
11.6mph - Average wind speed in November:
12.8mph - Average wind speed in December:
13.6mph
The windiest month (with the highest average wind speed) is January (13.9mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity
Eastport, ME
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall
Eastport, ME
- Average rainfall in January:
2.6" - Average rainfall in February:
2.28" - Average rainfall in March:
2.01" - Average rainfall in April:
2.68" - Average rainfall in May:
2.56" - Average rainfall in June:
2.56"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.65" - Average rainfall in September:
2.09" - Average rainfall in October:
2.8" - Average rainfall in November:
3.03" - Average rainfall in December:
3.23"
The wettest month (with the highest rainfall) is December (3.23").
The driest month (with the least rainfall) is August (1.65").
Average rainfall days
Eastport, ME
- Average rainfall days in January:
8.9 days - Average rainfall days in February:
7.5 days - Average rainfall days in March:
10 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
16 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
10.3 days - Average rainfall days in September:
11 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (7.5 days).
Average snowfall
Eastport, ME
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Eastport, ME
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
8.9 days - Average snowfall days in April:
3.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.4 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
8.2 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature
Eastport, ME
The best month for swimming (with the highest average sea temperature) is September (55.3°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).
Average daylight / Average sunshine
Eastport, ME
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 12min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
3h and 36min - Average sunshine in March:
5h and 6min - Average sunshine in April:
6h and 48min - Average sunshine in May:
7h and 36min - Average sunshine in June:
8h and 24min
- Average sunshine in July:
9h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
7h and 48min - Average sunshine in October:
6h and 24min - Average sunshine in November:
4h and 36min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days
Eastport, ME
- Average sunshine days in January:
12.5 days - Average sunshine days in February:
10.3 days - Average sunshine days in March:
12.4 days - Average sunshine days in April:
10.9 days - Average sunshine days in May:
13.6 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
15.8 days - Average sunshine days in August:
19.4 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
14.9 days - Average sunshine days in November:
15 days - Average sunshine days in December:
12.3 days
The month with the most sunshine days is August (19.4 days).
The month with the least sunshine days is February (10.3 days).
Average UV index
Eastport, ME
The months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Eastport, ME
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Eastport, ME
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





