December weather forecastNewburyport, MA
December
Weather in December
December, the concluding month of the calendar year in Newburyport, experiences a full onset of winter. The weather is characterized by the lowest temperatures of the year, with the average high being 38.5°F (3.6°C). Snowfall increases significantly to 3.39" (86mm), establishing a wintry atmosphere. The chill of the North Atlantic sea combined with the heightened wind speeds make this one of the coldest months. Thus, December becomes synonymous with a white Christmas, snow-clad landscapes, and warm fireplaces in Newburyport.Temperature
Arrival of December comes with a reduction in the average high-temperature, falling from a chilly 48°F (8.9°C) in November to a cold 38.5°F (3.6°C). In December, Newburyport records an average nighttime temperature of 29.3°F (-1.5°C).Humidity
In December, the average relative humidity in Newburyport 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 December, it is snowing for 5.8 days. Throughout December, 3.39" (86mm) of snow is accumulated. In Newburyport, during the entire year, snow falls for 33.6 days and aggregates up to 14.96" (380mm) of snow.Ocean temperature
In Newburyport, in December, the average water temperature is 44.6°F (7°C).Note: With an efficient thermal swimsuit, one can navigate 44.6°F (7°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 55.4°F (13°C) feels chilly.
Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 6:55 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.
Sunshine
In Newburyport, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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).
Average daylight in December /
Average sunshine in December
Newburyport, MA
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- 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).
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).
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).
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).
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).
