Climate and monthly weather forecast
Eastport, ME

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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 »

Frequently asked questions

What time of the year is the coldest?

Eastport reaches its average lowest temperatures in January, measuring 30.6°F (-0.8°C) at the peak and 19.9°F (-6.7°C) at the lowest.

How many days does it rain?

In Eastport, during the entire year, the rain falls for 143.2 days and collects up to 29.37" (746mm) of precipitation.

When does it snow?

January through April, October through December are months with snowfall in Eastport.

What is the snowiest month in Eastport?

The month with the most snowfall is January, when snow falls for 10.8 days and typically aggregates up to 2.64" (67mm) of snow.

How many days does it snow?

Throughout the year, there are 44.2 snowfall days, and 12.68" (322mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 3.6h of sunshine, February has the least sunshine of the year.

What month is the ocean coldest?

March is the month with the coldest seawater, with an average ocean temperature of 38.3°F (3.5°C).

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Eastport, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow?

In Eastport, snow does not fall in May through September.

When are the longest days?

With an average of 15h and 30min of daylight, June has the longest days of the year.

What is the most humid month?

The most humid month is July, with an average relative humidity of 83%.

What is the month with the highest UV index?

July and August, with an average maximum UV index of 5, are months with the highest UV index.

What is the warmest month?

August is the warmest month, with the temperature often reaching an average high of 67.8°F (19.9°C) and an average low of 59.4°F (15.2°C).

What is the driest month in Eastport?

August is the month with the least rainfall. Rain falls for 10.3 days and accumulates 1.65" (42mm) of precipitation.

What month has the most sunshine?

With an average of 10h of sunshine, August has the most sunshine of the year.

When is the ocean warmest?

September is the month with the warmest seawater, with an average ocean temperature of 55.4°F (13°C).

What is the least humid month?

With an average relative humidity of 77%, November is the least humid month.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.23" (82mm) of precipitation.

What is the month with the shortest days in Eastport?

With an average of 8h and 54min of daylight, December has the shortest days of the year.

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

Average temperature
Eastport, ME

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 - Eastport, ME

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 - Eastport, ME

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

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 - Eastport, ME

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 - Eastport, ME

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

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 - Eastport, ME

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

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 / Average sunshine - Eastport, ME

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).

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 - Eastport, ME

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 visibility
Eastport, ME

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).

Eastport, Maine, USA

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