December weather forecast
Newburyport, MA

Panorama of Newburyport Town in Massachusetts, and a view of the State Street, the iconic First Religious Society Church, and the big Merrimack River
Panorama of Newburyport Town in Massachusetts, and a view of the State Street, the iconic First Religious Society Church, and the big Merrimack River

Weather in December

The first month of the winter, December, is still a cold month in Newburyport, Massachusetts, with an average temperature varying between 29.3°F (-1.5°C) and 38.5°F (3.6°C).

Temperature

In December, the average high-temperature decreases from a chilly 48°F (8.9°C) in November to a cold 38.5°F (3.6°C). In December, in Newburyport, the average low-temperature is 29.3°F (-1.5°C).

Humidity

In Newburyport, the average relative humidity in December is 77%.

Rainfall

December is the month with the most rainfall. Rain falls for 11.4 days and accumulates 2.95" (75mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Newburyport, Massachusetts. In Newburyport, snow falls for 5.8 days, with typically accumulated 3.39" (86mm) of snow. Throughout the year, there are 33.6 snowfall days, and 14.96" (380mm) of snow is accumulated.

Ocean temperature

In December, the average ocean temperature in Newburyport is 44.6°F (7°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

December has the shortest days of the year in Newburyport, with an average of 9h and 5min of daylight.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:10 pm. On the last day of December, in Newburyport, sunrise is at 7:14 am and sunset at 4:19 pm EST.

Sunshine

In Newburyport, Massachusetts, the average sunshine in December is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Newburyport, Massachusetts. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Newburyport?

The average high-temperature, in December, is 38.5°F (3.6°C), while the average low-temperature is 29.3°F (-1.5°C).

What is the average humidity in December in Newburyport?

In Newburyport, the average relative humidity in December is 77%.

What is the wettest month in Newburyport?

December is the month with the most rainfall in Newburyport, Massachusetts. Rain falls for 11.4 days and accumulates 2.95" (75mm) of precipitation.

How many days does it rain in December in Newburyport?

In December, in Newburyport, Massachusetts, the rain falls for 11.4 days. Throughout December, 2.95" (75mm) of precipitation is accumulated.

How many days does it snow in December in Newburyport?

In Newburyport, Massachusetts, during December, snow falls for 5.8 days and regularly aggregates up to 3.39" (86mm) of snow.

What is the ocean temperature in December in Newburyport?

In Newburyport, Massachusetts, the average seawater temperature in December is 44.6°F (7°C). Swimming in 44.6°F (7°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Newburyport?

December has the shortest days of the year in Newburyport, with an average of 9h and 5min of daylight.

What is the average length of the day in December in Newburyport?

In Newburyport, the average day length in December is 9h and 5min.

When is the sunrise / sunset in December in Newburyport?

On the first day of December, sunrise is at 6:54 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:19 pm EST.

How many hours of sunshine does Newburyport have in December?

In December, the average sunshine duration in Newburyport, Massachusetts, is 4.9h.

What are the months with the lowest UV index in Newburyport?

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

How high is the UV index in December in Newburyport?

In December, the average daily maximum UV index in Newburyport is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Newburyport, MA

Average temperature in December - Newburyport, MA
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in December
Newburyport, MA

Average pressure in December - Newburyport, MA
  • 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 (29.92"Hg).

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Average wind speed in December
Newburyport, MA

Average wind speed in December - Newburyport, MA
  • Average wind speed in December: 10.9mph

The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in December
Newburyport, MA

Average humidity in December - Newburyport, MA
  • Average humidity in December: 77%

The months with the highest relative humidity are February and June (78%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in December
Newburyport, MA

Average rainfall in December - Newburyport, MA
  • Average rainfall in December: 2.95"

The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.34").

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Average rainfall days in December
Newburyport, MA

Average rainfall days in December - Newburyport, MA
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is May (15.7 days).
The months with the least rainy days are January and February (8.6 days).

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Average snowfall in December
Newburyport, MA

Average snowfall in December - Newburyport, MA
  • Average snowfall in December: 3.39"

The month with the highest snowfall is February (4.02").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Newburyport, MA

Average snowfall days in December - Newburyport, MA
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in December
Newburyport, MA

Average sea temperature in December - Newburyport, MA
  • Average sea temperature in December: 45°F

The best month for swimming (with the highest average sea temperature) is August (64°F).
The coldest month (with the lowest average sea temperature) is March (37°F).

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Average daylight in December /
Average sunshine in December
Newburyport, MA

Average daylight in December / Average sunshine in December - Newburyport, MA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).

  • Average sunshine in December: 4h and 54min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in December
Newburyport, MA

Average sunshine days in December - Newburyport, MA
  • Average sunshine days in December: 14.8 days

The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is March (12.8 days).

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Average UV index in December
Newburyport, MA

Average UV index in December - Newburyport, MA
  • Average UV index in December: 2

The months with the highest UV index are June, 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 cloud cover in December
Newburyport, MA

Average cloud cover in December - Newburyport, MA
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Newburyport, MA

Average visibility in December - Newburyport, MA
  • Average visibility in December: 6mi

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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