Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With the onset of December, the average high-temperature subtly recedes from November's cool 50.7°F (10.4°C) to a wintry 41.9°F (5.5°C). December sees a slight dip to an average low temperature of 32.9°F (0.5°C) from the daytime highs.Humidity
In December, the average relative humidity is 76%.Rainfall
In North Plymouth, during December, the rain falls for 9.8 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 132.2 rainfall days, and 16.3" (414mm) of precipitation is accumulated.Snowfall
Months with snowfall in North Plymouth are January through April, November and December. In North Plymouth, in December, snow falls for 4 days, with typically accumulated 1.02" (26mm) of snow. In North Plymouth, during the entire year, snow falls for 23.3 days and aggregates up to 5.87" (149mm) of snow.Ocean temperature
In December, the average ocean temperature in North Plymouth is 46.9°F (8.3°C).Note: Danger awaits those who swim in 46.9°F (8.3°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:51 am and sunset at 4:12 pm. On the last day of December, in North Plymouth, sunrise is at 7:10 am and sunset at 4:21 pm EST.
Sunshine
February and December, with an average of 4.7h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index in North Plymouth are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
Is December cold in North Plymouth?
What is the average humidity in December in North Plymouth?
How many days does it rain in December in North Plymouth?
How many days does it snow in December in North Plymouth?
What is the ocean temperature in December in North Plymouth?
What is the month with the shortest days in North Plymouth?
What is the average length of the day in December in North Plymouth?
What time are sunrise and sunset in December in North Plymouth?
What are the months with the least sunshine in North Plymouth?
How many hours of sunshine does North Plymouth have in December?
When is the lowest UV index in North Plymouth?
How high is the UV index in December in North Plymouth?
Average temperature in December
North Plymouth, MA
- Average high temperature in December: 41.9°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 (35.8°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
North Plymouth, 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 (29.93"Hg).
Average wind speed in December
North Plymouth, MA
- Average wind speed in December: 11.6mph
The windiest month (with the highest average wind speed) is January (12.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in December
North Plymouth, MA
- Average humidity in December: 76%
The month with the highest relative humidity is July (80%).
The months with the lowest relative humidity are March, April and November (74%).
Average rainfall in December
North Plymouth, MA
- Average rainfall in December: 1.54"
The wettest months (with the highest rainfall) are July and October (1.65").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in December
North Plymouth, MA
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in December
North Plymouth, MA
- Average snowfall in December: 1.02"
The month with the highest snowfall is March (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
North Plymouth, MA
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
North Plymouth, MA
- Average sea temperature in December: 46.9°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in December /
Average sunshine in December
North Plymouth, MA
- Average daylight in December: 9h and 1min
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 December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in December
North Plymouth, MA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in December
North Plymouth, 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
North Plymouth, MA
- Average cloud cover in December: 48
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
North Plymouth, 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).
North Plymouth, Massachusetts, USA
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