Climate and monthly weather forecast
Dennis, MA

Share

Weather in January

January, like December, in Dennis, Massachusetts, is another cold winter month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 30.4°F (-0.9°C). January, on average, is the coldest month, registering a high temperature of 38.3°F (3.5°C) and a low of 30.4°F (-0.9°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Dennis, Massachusetts, with temperature in the range of an average high of 38.8°F (3.8°C) and an average low of 30.7°F (-0.7°C). As Dennis steps into February, the average high-temperature is measured at a still cold 38.8°F (3.8°C), displaying minor differences from January's 38.3°F (3.5°C). Weather in February »

Weather in March

March, the first month of the spring in Dennis, is also a wintry month, with an average temperature fluctuating between 41.5°F (5.3°C) and 35.2°F (1.8°C). The onset of March marks an average high-temperature of a still icy 41.5°F (5.3°C), hardly differing from February's 38.8°F (3.8°C). Weather in March »

Weather in April

April in Dennis, Massachusetts, is a chilly spring month, with an average temperature fluctuating between 42.4°F (5.8°C) and 47.1°F (8.4°C). April marks a minor ascent in the average high-temperature, adjusting from March's wintry 41.5°F (5.3°C) to a frosty 47.1°F (8.4°C). Weather in April »

Weather in May

May, the last month of the spring in Dennis, is a refreshing month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 55.6°F (13.1°C). May's arrival is noted with a slight increase in the average high-temperature, moving from a frosty 47.1°F (8.4°C) in April to a mild 55.6°F (13.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a refreshing month in Dennis, Massachusetts, with an average temperature ranging between min 59.4°F (15.2°C) and max 64°F (17.8°C). June's arrival signals a modest temperature shift, moving from a refreshing 55.6°F (13.1°C) in May to a comfortable 64°F (17.8°C). Weather in June »

Weather in July

July is an agreeable summer month in Dennis, Massachusetts, with an average temperature varying between 67.3°F (19.6°C) and 72.1°F (22.3°C). The shift from June to July introduces a subtle increase in the average high-temperature, moving from an enjoyable 64°F (17.8°C) to a pleasant 72.1°F (22.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in Dennis, Massachusetts, with an average temperature ranging between min 68.2°F (20.1°C) and max 72.5°F (22.5°C). August, recognised by an average high temperature of 72.5°F (22.5°C) and a low of 68.2°F (20.1°C), is Dennis's warmest month. Weather in August »

Weather in September

The first month of the autumn, September, is still a refreshing month in Dennis, Massachusetts, with temperature in the range of an average high of 67.5°F (19.7°C) and an average low of 62.8°F (17.1°C). The shift to September signals an average high-temperature of an enjoyable 67.5°F (19.7°C), subtly varied from August's 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, in Dennis, Massachusetts, is a moderate autumn month, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 59.7°F (15.4°C). The transition into October involves a small decrease in the average high-temperature, dipping slightly from 67.5°F (19.7°C) in September to a still refreshing 59.7°F (15.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Dennis, is also a fresh month, with an average temperature fluctuating between 51.1°F (10.6°C) and 44.4°F (6.9°C). The onset of November brings a small shift in high-temperatures, falling from a moderate 59.7°F (15.4°C) in October to a fresh 51.1°F (10.6°C). Weather in November »

Weather in December

December, the first month of the winter in Dennis, is also a frosty month, with temperature in the range of an average low of 36.7°F (2.6°C) and an average high of 43.5°F (6.4°C). December's arrival comes with a mild decrease in the average high-temperature, moving subtly from a fresh 51.1°F (10.6°C) in November to a frosty 43.5°F (6.4°C). Weather in December »
[Resources]

Frequently asked questions

What is the coldest time of year in Dennis?

Dennis's coldest month, January, generally records average temperatures ranging from a high of 38.3°F (3.5°C) to a low of 30.4°F (-0.9°C).

How much does it rain in Dennis?

In Dennis, Massachusetts, during the entire year, the rain falls for 129.6 days and collects up to 13.94" (354mm) of precipitation.

When does it snow in Dennis?

Months with snowfall are January through April and December.

What is the snowiest month in Dennis?

The months with the most snowfall are January and February, with an average 0.63" (16mm) of accumulated snow.

How much does it snow in Dennis?

In Dennis, during the entire year, snow falls for 21.6 days and aggregates up to 2.17" (55mm) of snow.

When is the lowest UV index in Dennis?

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

When is Daylight Saving Time (DST) in Dennis?

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 in Dennis?

May through July, with an average relative humidity of 83%, are most humid months.

When it does not snow in Dennis?

May through November are months without snowfall.

When are the longest days in Dennis?

The month with the longest days is June, with an average of 15h and 12min of daylight.

When is the highest UV index in Dennis?

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

What is the warmest month in Dennis?

In Dennis, temperatures reach their average annual highs in August, measuring 72.5°F (22.5°C) and a minimum average of 68.2°F (20.1°C).

What is the driest month in Dennis?

The month with the least rainfall in Dennis, Massachusetts, is August, when the rain falls for 11.3 days and typically collects 0.94" (24mm) of precipitation.

What month has the most sunshine in Dennis?

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

What is the rainiest month in Dennis?

October is the month with the most rainfall in Dennis, Massachusetts. Rain falls for 12 days and accumulates 1.89" (48mm) of precipitation.

What is the least humid month in Dennis?

With an average relative humidity of 74%, November is the least humid month in Dennis, Massachusetts.

What is the month with the shortest days in Dennis?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Dennis, Massachusetts.

What is the month with the least sunshine in Dennis?

The month with the least sunshine in Dennis, Massachusetts, is December, with an average of 4.6h of sunshine.

Average temperature
Dennis, MA

Average temperature - Dennis, MA

The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°F).

The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

[Resources]

Average pressure
Dennis, MA

Average pressure - 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).

[Resources]

Average wind speed
Dennis, MA

Average wind speed - Dennis, MA

The windiest month (with the highest average wind speed) is January (16.4mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).

[Resources]

Average humidity
Dennis, MA

Average humidity - Dennis, MA

The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).

[Resources]

Average rainfall
Dennis, MA

Average rainfall - Dennis, MA

The wettest month (with the highest rainfall) is October (1.89").
The driest month (with the least rainfall) is August (0.94").

[Resources]

Average rainfall days
Dennis, MA

Average rainfall days - Dennis, MA

The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (8.1 days).

[Resources]

Average snowfall
Dennis, MA

Average snowfall - Dennis, MA

The months with the highest snowfall are January and February (0.63").
The months with the least snowfall are May, June, July, August, September, October and November (0").

[Resources]

Average snowfall days
Dennis, MA

Average snowfall days - Dennis, MA

The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average daylight / Average sunshine
Dennis, MA

Average daylight / Average sunshine - 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 month with the least sunshine is December (Average sunshine: 4h and 36min).

[Resources]

Average sunshine days
Dennis, MA

Average sunshine days - Dennis, MA

The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is February (14.8 days).

[Resources]

Average UV index
Dennis, MA

Average UV index - 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).

[Resources]

Average visibility
Dennis, MA

Average visibility - 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).

[Resources]

Dennis, Massachusetts, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location