December weather forecast
Plymouth, NC

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Weather in December

December, the first month of the winter in Plymouth, is still a cool month, with an average temperature ranging between min 39.6°F (4.2°C) and max 54.1°F (12.3°C).

Temperature

December's onset introduces a mild reduction in the average high-temperature, from a mild 60.3°F (15.7°C) in November to a cool 54.1°F (12.3°C). Plymouth, in December, observes a steady average low-temperature of 39.6°F (4.2°C).

Humidity

The most humid month is December, with an average relative humidity of 80%.

Rainfall

In December, the rain falls for 11.1 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 165 rainfall days, and 28.74" (730mm) of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.2" (5mm) of snow. In Plymouth, during the entire year, snow falls for 4 days and aggregates up to 2.44" (62mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:03 pm EST.

Sunshine

With an average of 5.4h of sunshine, December has the least sunshine of the year.

UV index

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 in December interprets into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

The average high-temperature and low-temperature in Plymouth during December are 54.1°F (12.3°C) and 39.6°F (4.2°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the most humid month?

December is the most humid month, with an average relative humidity of 80%.

What is the average humidity in December?

In Plymouth, the average relative humidity in December is 80%.

How many days does it rain in December?

In Plymouth, during December, the rain falls for 11.1 days and regularly aggregates up to 2.2" (56mm) of precipitation.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.2" (5mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 48min of daylight.

How many hours of daylight does Plymouth have in December?

In December, the average day length is 9h and 46min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:59 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:03 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.4h of sunshine.

How many hours of sunshine does Plymouth have in December?

The average sunshine duration in December is 5.4h.

How high is the UV index in December?

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Plymouth, NC

Average temperature in December - Plymouth, NC
  • Average high temperature in December: 54.1°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (48.9°F).

  • Average low temperature in December: 39.6°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).

Average pressure in December
Plymouth, NC

Average pressure in December - Plymouth, NC
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in December
Plymouth, NC

Average wind speed in December - Plymouth, NC
  • Average wind speed in December: 6.7mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Plymouth, NC

Average humidity in December - Plymouth, NC
  • Average humidity in December: 80%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are January and April (76%).

Average rainfall in December
Plymouth, NC

Average rainfall in December - Plymouth, NC
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is January (1.73").

Average rainfall days in December
Plymouth, NC

Average rainfall days in December - Plymouth, NC
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is October (9.3 days).

Average snowfall in December
Plymouth, NC

Average snowfall in December - Plymouth, NC
  • Average snowfall in December: 0.2"

The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Plymouth, NC

Average snowfall days in December - Plymouth, NC
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is January (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Plymouth, NC

Average daylight in December / Average sunshine in December - Plymouth, NC
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 5h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in December
Plymouth, NC

Average sunshine days in December - Plymouth, NC
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in December
Plymouth, NC

Average UV index in December - Plymouth, NC
  • Average UV index in December: 3

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in December
Plymouth, NC

Average cloud cover in December - Plymouth, NC
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 32).

Average visibility in December
Plymouth, NC

Average visibility in December - Plymouth, NC
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).

Plymouth, North Carolina, USA

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