Climate and monthly weather forecastEast Dennis, MA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in East Dennis, Massachusetts, with an average temperature varying between 38.5°F (3.6°C) and 30.6°F (-0.8°C). January stands out as East Dennis's coldest month, with temperatures ranging between an average high of 38.5°F (3.6°C) and a low of 30.6°F (-0.8°C). Weather in January »Weather in February
February, the last month of the winter in East Dennis, is also an icy month, with an average temperature varying between 38.8°F (3.8°C) and 31.1°F (-0.5°C). With February's advent, East Dennis sees an average high-temperature of a still wintry 38.8°F (3.8°C), subtly shifted from January's 38.5°F (3.6°C). Weather in February »Weather in March
The first month of the spring, March, is also a wintry month in East Dennis, Massachusetts, with an average temperature varying between 35.6°F (2°C) and 41.4°F (5.2°C). East Dennis starts March with an average high-temperature of a still wintry 41.4°F (5.2°C), hinting at a minimal fluctuation from February. Weather in March »Weather in April
April in East Dennis, Massachusetts, is a chilly spring month, with an average temperature ranging between max 47.1°F (8.4°C) and min 42.4°F (5.8°C). In East Dennis, the onset of April comes with a modest high-temperature shift, transitioning from March's icy 41.4°F (5.2°C) to a chilly 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 an average temperature varying between 51.3°F (10.7°C) and 55°F (12.8°C). In East Dennis, stepping into May brings a gentle temperature nudge, moving slightly up from April's chilly 47.1°F (8.4°C) to a fresh 55°F (12.8°C). Weather in May »Weather in June
June, the first month of the summer in East Dennis, is an enjoyable month, with an average temperature ranging between min 59.4°F (15.2°C) and max 63.5°F (17.5°C). In June, the meteorological conditions subtly change with the average high-temperature edging from a fresh 55°F (12.8°C) in May to a refreshing 63.5°F (17.5°C). Weather in June »Weather in July
July in East Dennis, Massachusetts, is a pleasant summer month, with an average temperature fluctuating between 67.6°F (19.8°C) and 71.6°F (22°C). The arrival of July witnesses a small shift in the average high-temperature, moving from a comfortable 63.5°F (17.5°C) in June to an agreeable 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 an average temperature ranging between max 72.1°F (22.3°C) and min 68.5°F (20.3°C). August, on average, is the warmest month, registering a high temperature of 72.1°F (22.3°C) and a low of 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 an average temperature varying between 67.1°F (19.5°C) and 63°F (17.2°C). With the advent of September, East Dennis's high-temperatures adjust to an enjoyable 67.1°F (19.5°C), closely aligning with the preceding month. Weather in September »Weather in October
October, like September, is another refreshing autumn month in East Dennis, Massachusetts, with an average temperature varying between 59.9°F (15.5°C) and 54.7°F (12.6°C). October signifies a gentle decline in East Dennis's average high-temperature, easing from an enjoyable 67.1°F (19.5°C) in September to a mild 59.9°F (15.5°C). Weather in October »Weather in November
November, the last month of the autumn in East Dennis, is another cool month, with an average temperature varying between 51.3°F (10.7°C) and 45.1°F (7.3°C). The onset of November is marked by a minor decrease in temperature, transitioning from a moderate 59.9°F (15.5°C) in October to a cool 51.3°F (10.7°C). Weather in November »Weather in December
December, the first month of the winter in East Dennis, is still a chilly month, with an average temperature ranging between min 36.9°F (2.7°C) and max 43.7°F (6.5°C). In the transition to December, East Dennis observes a minor drop in 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 »Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with an average high of 38.5°F (3.6°C) and a low of 30.6°F (-0.8°C), signifies the coldest month of the year.
In East Dennis, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.
Months with snowfall are January through April and December.
The month with the most snowfall is January, when snow falls for 6.4 days and typically aggregates up to 0.87" (22mm) of snow.
In East Dennis, Massachusetts, during the entire year, snow falls for 20.8 days and aggregates up to 2.6" (66mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the least sunshine are February and December, with an average of 4.6h of sunshine.
With an average ocean temperature of 39°F (3.9°C), March is the month with the coldest seawater in East 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.
In East Dennis, snow does not fall in May through November.
The months with the highest humidity are June and July, with an average relative humidity of 84%.
With an average of 15h and 12min of daylight, June has the longest days of the year.
The months with the highest UV index are July and August, with an average maximum UV index of 6.
August, noted for its average high-temperature of 72.1°F (22.3°C) and an average low-temperature of 68.5°F (20.3°C), is considered the warmest month in East Dennis.
The month with the least rainfall is August, when the rain falls for 11.2 days and typically collects 0.94" (24mm) of precipitation.
August is the month with the warmest seawater, with an average ocean temperature of 67.5°F (19.7°C).
With an average of 10.8h of sunshine, August has the most sunshine of the year in East Dennis.
October is the month with the most rainfall. Rain falls for 11.6 days and accumulates 1.93" (49mm) of precipitation.
The least humid month is November, with an average relative humidity of 74%.
The month with the shortest days is December, with an average of 9h and 12min of daylight.
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).
Average pressure
East Dennis, MA
- Average pressure in January:
30"Hg - Average pressure in February:
29.98"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
East Dennis, MA
- Average wind speed in January:
16.8mph - Average wind speed in February:
16.3mph - Average wind speed in March:
16.5mph - Average wind speed in April:
14.4mph - Average wind speed in May:
12.5mph - Average wind speed in June:
11.7mph
- Average wind speed in July:
10.9mph - Average wind speed in August:
10.9mph - Average wind speed in September:
12.8mph - Average wind speed in October:
14.8mph - Average wind speed in November:
16mph - Average wind speed in December:
16.4mph
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).
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%).
Average rainfall
East Dennis, MA
- Average rainfall in January:
1.06" - Average rainfall in February:
1.02" - Average rainfall in March:
1.06" - Average rainfall in April:
1.34" - Average rainfall in May:
1.14" - Average rainfall in June:
1.14"
- Average rainfall in July:
1.02" - Average rainfall in August:
0.94" - Average rainfall in September:
1.18" - Average rainfall in October:
1.93" - Average rainfall in November:
0.98" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").
Average rainfall days
East Dennis, MA
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
9.9 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
12.5 days - Average rainfall days in June:
11.2 days
- Average rainfall days in July:
12.3 days - Average rainfall days in August:
11.2 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
11 days - Average rainfall days in December:
10.8 days
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).
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").
Average snowfall days
East Dennis, MA
- Average snowfall days in January:
6.4 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.4 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 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
4.5 days
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).
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).
Average daylight / Average sunshine
East Dennis, MA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
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).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 48min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 36min
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).
Average sunshine days
East Dennis, MA
- Average sunshine days in January:
15.4 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
16.4 days - Average sunshine days in June:
16.8 days
- Average sunshine days in July:
17.6 days - Average sunshine days in August:
18.3 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).
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).
Average cloud cover
East Dennis, MA
The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
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).
