Climate and monthly weather forecast
East Dennis, MA

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Weather in January

January, like December, in East Dennis, Massachusetts, is another cold winter month, with temperature in the range of an average low of 30.6°F (-0.8°C) and an average high of 38.5°F (3.6°C). Temperature records mark January as the coldest month, with highs averaging 38.5°F (3.6°C) and lows at 30.6°F (-0.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in East Dennis, Massachusetts, with temperature in the range of an average high of 38.8°F (3.8°C) and an average low of 31.1°F (-0.5°C). Transitioning into February, East Dennis experiences an average high-temperature of a still wintry 38.8°F (3.8°C), marking a minor shift from the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is still a cold month in East Dennis, Massachusetts, with an average temperature varying between 35.6°F (2°C) and 41.4°F (5.2°C). The commencement of March brings an average high-temperature of a still wintry 41.4°F (5.2°C), marking an inconsequential divergence from February. Weather in March »

Weather in April

April in East Dennis, Massachusetts, is a chilly spring month, with temperature in the range of an average low of 42.4°F (5.8°C) and an average high of 47.1°F (8.4°C). The arrival of April introduces a minor uplift in high-temperatures, adjusting from an icy 41.4°F (5.2°C) in March to a frosty 47.1°F (8.4°C). Weather in April »

Weather in May

May, the last month of the spring in East Dennis, is a fresh month, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 55°F (12.8°C). East Dennis's transition into May sees a mild rise in the average high-temperature, edging from a chilly 47.1°F (8.4°C) in April to a cool 55°F (12.8°C). Weather in May »

Weather in June

June, the first month of the summer in East Dennis, is a comfortable month, with an average temperature varying between 59.4°F (15.2°C) and 63.5°F (17.5°C). June brings a slight elevation in the average high-temperature, transitioning from May's fresh 55°F (12.8°C) to a comfortable 63.5°F (17.5°C). Weather in June »

Weather in July

July in East Dennis, Massachusetts, is an agreeable summer month, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 71.6°F (22°C). A minor escalation in the average high-temperature is seen with the onset of July, moving from an enjoyable 63.5°F (17.5°C) in June to a pleasant 71.6°F (22°C). Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in East Dennis, Massachusetts, with temperature in the range of an average low of 68.5°F (20.3°C) and an average high of 72.1°F (22.3°C). August is the warmest month of the year, registering average temperatures as high as 72.1°F (22.3°C) and as low as 68.5°F (20.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a refreshing month in East Dennis, Massachusetts, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 63°F (17.2°C). In September, the average high-temperature registers at an enjoyable 67.1°F (19.5°C), nearly identical to August's 72.1°F (22.3°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in East Dennis, Massachusetts, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 59.9°F (15.5°C). As September transitions into October, East Dennis sees a gentle drop in the average high-temperature, transitioning from a refreshing 67.1°F (19.5°C) to a mild 59.9°F (15.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in East Dennis, Massachusetts, with an average temperature ranging between max 51.3°F (10.7°C) and min 45.1°F (7.3°C). The average high-temperature slightly decreases in November, shifting from a mild 59.9°F (15.5°C) in October to a fresh 51.3°F (10.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in East Dennis, Massachusetts, with an average temperature fluctuating between 43.7°F (6.5°C) and 36.9°F (2.7°C). The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a fresh 51.3°F (10.7°C) in November to a chilly 43.7°F (6.5°C). Weather in December »
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Frequently asked questions

What month is the coldest in East Dennis?

East Dennis's January weather, marked by an average high temperature of 38.5°F (3.6°C) and an average low temperature of 30.6°F (-0.8°C), is the coldest in the year.

How many days does it rain in East Dennis?

In East Dennis, Massachusetts, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.

When does it snow in East Dennis?

Months with snowfall in East Dennis are January through April and December.

When does it snow the most in East Dennis?

January is the month with the most snowfall in East Dennis, Massachusetts. Snow falls for 6.4 days and accumulates 0.87" (22mm) of snow.

How many days does it snow in East Dennis?

In East Dennis, Massachusetts, during the entire year, snow falls for 20.8 days and aggregates up to 2.6" (66mm) of snow.

What are the months with the lowest UV index in East Dennis?

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

What is the month with the least sunshine in East Dennis?

The months with the least sunshine are February and December, with an average of 4.6h of sunshine.

What is the month with the coldest ocean in East Dennis?

The month with the coldest seawater is March, with an average ocean temperature of 39°F (3.9°C).

When is Daylight Saving Time (DST) in East Dennis?

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

In East Dennis, snow does not fall in May through November.

What are the most humid months in East Dennis?

June and July, with an average relative humidity of 84%, are most humid months.

When are the longest days in East Dennis?

June has the longest days of the year in East Dennis, with an average of 15h and 12min of daylight.

When is the highest UV index in East Dennis?

July and August, with an average maximum UV index of 6, are months with the highest UV index in East Dennis, Massachusetts.

What is the warmest month in East Dennis?

East Dennis's temperatures tend to reach their peak averages in August, with a high of 72.1°F (22.3°C) and a low of 68.5°F (20.3°C).

What is the driest month in East Dennis?

August is the month with the least rainfall in East Dennis, Massachusetts. Rain falls for 11.2 days and accumulates 0.94" (24mm) of precipitation.

When is the ocean warmest in East Dennis?

August is the month with the warmest seawater in East Dennis, with an average ocean temperature of 67.5°F (19.7°C).

What month has the most sunshine in East Dennis?

The month with the most sunshine in East Dennis, Massachusetts, is August, with an average of 10.8h of sunshine.

What is the wettest month in East Dennis?

The month with the most rainfall is October, when the rain falls for 11.6 days and typically aggregates up to 1.93" (49mm) of precipitation.

What is the least humid month in East Dennis?

The least humid month in East Dennis, Massachusetts, is November, with an average relative humidity of 74%.

What is the month with the shortest days in East Dennis?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

Average temperature
East Dennis, MA

Average temperature - East Dennis, MA

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure
East Dennis, MA

Average pressure - East Dennis, MA

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
East Dennis, MA

Average wind speed - East Dennis, MA

The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

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Average humidity
East Dennis, MA

Average humidity - East Dennis, MA

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).

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Average rainfall
East Dennis, MA

Average rainfall - East Dennis, MA

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").

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Average rainfall days
East Dennis, MA

Average rainfall days - East Dennis, MA

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall
East Dennis, MA

Average snowfall - East Dennis, MA

The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days
East Dennis, MA

Average snowfall days - East Dennis, MA

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature
East Dennis, MA

Average sea temperature - East Dennis, MA

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

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Average daylight / Average sunshine
East Dennis, MA

Average daylight / Average sunshine - East Dennis, MA

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days
East Dennis, MA

Average sunshine days - East Dennis, MA

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).

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Average UV index
East Dennis, MA

Average UV index - East Dennis, MA

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
East Dennis, MA

Average visibility - East Dennis, MA

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).

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East Dennis, Massachusetts, USA

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