Climate and monthly weather forecast
Yarmouth, ME

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The climate of Yarmouth

Situated in the state of Maine, USA, Yarmouth possesses a predominantly Humid Continental climate, as designated by the Köppen climate classification - Dfb. Aspects of this classification encompass a lack of dry season and a warm summer. Monthly average weather conditions run the gamut from chilly to warm, with high humidity persistently present.

Throughout the year, the Yarmouth weather fluxes between a high temperature of 29.5°F (-1.4°C) in January to a peak of 74.7°F (23.7°C) in July. Similarly, the low-temperature gradients extend from 18°F (-7.8°C) in January to 60.6°F (15.9°C) in July. Relative humidity levels remain steady around the 80% mark, dipping to 75% in November.

Observing rainfall patterns reveals an intriguing facet of Yarmouth's weather system. Rainfall ranges from a low of 1.14" (29mm) in September to a peak of 2.28" (58mm) in October without any dry spells. Furthermore, January and February witness a snowfall of 2.8 and 2.83" (72mm), respectively. Visible sunshine hours experience a variation from 5.2 hours in January to a maximum of 10.5 hours in August.

Clear distinctions in the statistics imply unique weather characteristics for specific periods of the year. With the absence of a dry season, Yarmouth witness regular precipitation throughout the year. The absence of snowfall from May to September and the year-round high levels of relative humidity further define the climatic characteristics of Yarmouth.

The best time to visit Yarmouth

While choosing the most suitable time to visit Yarmouth, a consideration of both temperature and rainfall is crucial. July and August exhibit the highest average temperatures, rising up to 74.7°F (23.7°C) and 74.3°F (23.5°C), respectively. The humidity level hovers around the 81% range, contributing to a warm and balmy climate.

From a sunshine perspective, August stands out with an average of 14.7 hours of daylight and 10.5 hours of sunshine. Despite the rainfall of 1.85" (47mm) in July and August, the distribution of rainfall over an average of 14.4 and 13.1 days prevents any prolonged disruption to outdoor activities.

The worst time to visit Yarmouth

The least favorable time to consider a visit to Yarmouth would be the winter season, particularly January and February. During these months, high temperatures barely reach above freezing at 29.5°F (-1.4°C) and 31.1°F (-0.5°C) respectively. The low temperatures even drop to 18°F (-7.8°C) in January. Snowfall during these months, 2.8" (71mm) and 2.83" (72mm) respectively, coupled with a relative humidity of 80% compound the frigid conditions.

Spring weather in Yarmouth

Spring in Yarmouth extends from March to May, presenting a weather medley. High temperatures progressively increase from 37.9°F (3.3°C) in March to 59.5°F (15.3°C) in May. Low temperatures similarly elevate from 26.2°F (-3.2°C) to 46.2°F (7.9°C). Precipitation during this transition maintains a steady presence with rainfall varying from 1.3" (33mm) in March to 1.89" (48mm) in May.

Summer weather in Yarmouth

June till August mark the summer months in Yarmouth. High temperatures increase from 67.5°F (19.7°C) in June, peaking at 74.7°F (23.7°C) in July before slightly dropping to 74.3°F (23.5°C) in August. Low temperatures align with this upward trend, rising from 53.6°F (12°C) to 60.6°F (15.9°C) over the period. The monthly rainfall ranges from 1.54-1.85" (-47mm).

Autumn weather in Yarmouth

Yarmouth's autumn months, September through November, carry a downward temperature trend. High temperatures oscillate from 67.8°F (19.9°C) in September to 45.3°F (7.4°C) in November. Concurrently, low temperatures decrease from 54.1°F (12.3°C) in September to 34.9°F (1.6°C) in November. Yarmouth sees the highest rainfall of 2.28" (58mm) in October.

Winter weather in Yarmouth

In Yarmouth, winter starts in December lasting till February. The high temperatures significantly reduce to below freezing, achieving 35.1°F (1.7°C) in December and falling to 29.5°F (-1.4°C) by January. The low temperatures echo the chill, reducing to 26.1°F (-3.3°C) in December and further dropping to 18°F (-7.8°C) in February. With snowfall ranging from 1.97" (50mm) in December to 2.8" (71mm) in January, Yarmouth winters are decidedly frosty and snowy.

Weather in January

January presents Yarmouth, Maine with the coldest weather of the year, setting the stage for winter activities. Variances in daily high and low temperatures mark January's climate, engrossing the city under a thick blanket of winter. Weather in January »

Weather in February

As the second month of the year, February follows January's chill, offering similar weather conditions in Yarmouth. A noticeable increment in daylight length accompanies the wintry feel of the February weather. The city's climate gears towards the spring season, with snowfall diminishing from 2.8" (71mm) to 2.83" (72mm). Weather in February »

Weather in March

March marks the conclusion of the intense winter and welcomes the onset of spring in Yarmouth. The warmth of the March sun noticeably thaws the icy atmosphere, hinting at the forthcoming comfortable weather. With the close of winter, there is a decrease in snowfall, falling to 1.81" (46mm) over 6.1 days. Weather in March »

Weather in April

April reveals refreshingly pleasant weather in Yarmouth, differing starkly from the preceding winter months. It witnesses the city bathed in the warmth of longer daylight duration and the blossoming of flora. With the rise in temperature, the city experiences 1.85" (47mm) of rain across 13.8 days. Weather in April »

Weather in May

In May, Yarmouth completely sheds off the residual winter vibes, welcoming full-blown spring weather. The city glows under the increasing sunlight duration, paving the way for more outdoor activities. Rainfall becomes a frequent occurrence, with a reading of 1.89" (48mm) across 13.8 days. Weather in May »

Weather in June

The emergence of June marks the arrival of summer weather in Yarmouth. Increasing daylight hours and now dominant sunshine lead to higher temperatures. June observes 1.85" (47mm) of rain over 13.3 days, contributing to the overall humidity. Weather in June »

Weather in July

July, the zenith of summer, floods Yarmouth with the year’s peak temperatures. Clear skyscapes and abundant sunlight rule, signifying typical summer weather. Average monthly rainfall reduces slightly to 1.54" (39mm) over 14.4 days of rainfall occurrences. Weather in July »

Weather in August

August in Yarmouth maintains the summer trend set by July, offering similar weather conditions. The city remains under the tight grip of warmth and sunlight, with extended daylight hours. August contributes 1.85" (47mm) of rain, falling over 13.1 days, maintaining the summer humidity. Weather in August »

Weather in September

September in Yarmouth serves as the gateway to autumn, coming with a noticeable change in weather. The temperatures start to decline, paving the way for the crisp autumn weather the city is known for. September is drier compared to August, seeing only 1.14" (29mm) of rain over 9.5 days. Weather in September »

Weather in October

October propels Yarmouth into the heart of autumn with a burst of vibrant foliage and milder temperatures. The city’s climate sees variable weather conditions, tinged with crisp mornings and sunny afternoons. October observes an increment in rainfall, displaying 2.28" (58mm) spread over 12.1 days. Weather in October »

Weather in November

November, with shorter days and falling temperatures, steers Yarmouth towards the onset of winter. The last vestiges of vibrant autumn hues start to fade, replaced by bare, rustic tree branches. The ambient humidity witnesses a minor decrease as the city readies itself for winter. Weather in November »

Weather in December

December wraps up the year in Yarmouth with decisive winter weather. The transformation from autumn to winter becomes apparent as the landscape takes on a frosty persona. The month displays an increased snowfall of 1.97" (50mm) over 6.2 days, setting the scene for Christmas festivities. Weather in December »

Frequently asked questions

What are the coldest months?

The lowest temperatures are recorded in January, with averages reaching a high of 29.5°F (-1.4°C) and a low of 18°F (-7.8°C).

How many days does it rain?

Throughout the year, there are 132.8 rainfall days, and 19.88" (505mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, November and December.

How much does it snow?

Throughout the year, there are 31.2 snowfall days, and 10.94" (278mm) of snow is accumulated.

What are the months with the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the snowiest month?

The month with the most snowfall is February, when snow falls for 7.7 days and typically aggregates up to 2.83" (72mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.

What are the most humid months?

June and July, with an average relative humidity of 81%, are most humid months.

When it does not snow?

June through October are months without snowfall.

When are the longest days in Yarmouth?

With an average of 15h and 24min of daylight, June has the longest days of the year.

What are the months with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What time of the year is the hottest?

July, having an average high-temperature of 74.7°F (23.7°C) and an average low-temperature of 60.6°F (15.9°C), is the warmest month.

What month has the most sunshine?

With an average of 10.5h of sunshine, August has the most sunshine of the year.

What is the driest month?

September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 1.14" (29mm) of precipitation.

What is the wettest month?

October is the month with the most rainfall. Rain falls for 12.1 days and accumulates 2.28" (58mm) of precipitation.

What is the least humid month?

With an average relative humidity of 75%, November is the least humid month in Yarmouth.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 4.7h of sunshine.

Average temperature
Yarmouth, ME

Average temperature - Yarmouth, ME

The warmest month (with the highest average high temperature) is July (74.7°F).
The month with the lowest average high temperature is January (29.5°F).

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure
Yarmouth, ME

Average pressure - Yarmouth, ME

The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Yarmouth, ME

Average wind speed - Yarmouth, ME

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity
Yarmouth, ME

Average humidity - Yarmouth, ME

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is November (75%).

Average rainfall
Yarmouth, ME

Average rainfall - Yarmouth, ME

The wettest month (with the highest rainfall) is October (2.28").
The driest month (with the least rainfall) is September (1.14").

Average rainfall days
Yarmouth, ME

Average rainfall days - Yarmouth, ME

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (6 days).

Average snowfall
Yarmouth, ME

Average snowfall - Yarmouth, ME

The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
Yarmouth, ME

Average snowfall days - Yarmouth, ME

The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine
Yarmouth, ME

Average daylight / Average sunshine - Yarmouth, ME

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days
Yarmouth, ME

Average sunshine days - Yarmouth, ME

The months with the most sunshine days are January and September (18.5 days).
The month with the least sunshine days is April (13 days).

Average UV index
Yarmouth, ME

Average UV index - Yarmouth, ME

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average visibility
Yarmouth, ME

Average visibility - Yarmouth, 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).

Yarmouth, Maine, USA

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