December weather forecast
Port Clyde, ME

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Weather in December

The first month of the winter, December, is also an icy month in Port Clyde, Maine, with temperature in the range of an average low of 28.4°F (-2°C) and an average high of 37°F (2.8°C).

Temperature

Port Clyde's progression into December involves a gentle drop in the average high-temperature, from a frosty 45.5°F (7.5°C) in November to a cold 37°F (2.8°C). Port Clyde, in December, registers an average low temperature of 28.4°F (-2°C), showing a minute reduction from daily highs.

Humidity

The average relative humidity in December is 77%.

Rainfall

December is the month with the most rainfall in Port Clyde. Rain falls for 11.3 days and accumulates 3.35" (85mm) of precipitation.

Snowfall

Months with snowfall in Port Clyde are January through April, November and December. In Port Clyde, in December, snow falls for 6.5 days, with typically accumulated 1.81" (46mm) of snow. Throughout the year, in Port Clyde, there are 33.1 snowfall days, and 12.36" (314mm) of snow is accumulated.

Daylight

With an average of 9h and 0min of daylight, December has the shortest days of the year.
On the first day of December in Port Clyde, sunrise is at 6:52 am and sunset at 4:00 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:09 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 4.5h of sunshine.

UV index

The months with the lowest UV index in Port Clyde 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 low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is December in Port Clyde?

December temperatures in Port Clyde, Maine, vary between a high-temperature of 37°F (2.8°C) and a low-temperature of 28.4°F (-2°C).

What is the average humidity in December in Port Clyde?

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

What is the rainiest month in Port Clyde?

December is the month with the most rainfall in Port Clyde, Maine. Rain falls for 11.3 days and accumulates 3.35" (85mm) of precipitation.

How many days does it rain in December in Port Clyde?

In December, the rain falls for 11.3 days. Throughout December, 3.35" (85mm) of precipitation is accumulated.

How much does it snow in Port Clyde in December?

In Port Clyde, during December, snow falls for 6.5 days and regularly aggregates up to 1.81" (46mm) of snow.

What is the month with the shortest days in Port Clyde?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

What is the average length of the day in December in Port Clyde?

In Port Clyde, the average day length in December is 8h and 58min.

When is the sunrise / sunset in December in Port Clyde?

In December, on the first day of the month, sunrise is at 6:52 am and sunset at 4:00 pm. On the last day of the month, in Port Clyde, Maine, sunrise is at 7:11 am and sunset at 4:09 pm EST.

What is the month with the least sunshine in Port Clyde?

The month with the least sunshine is December, with an average of 4.5h of sunshine.

How many hours of sunshine does Port Clyde have in December?

In December, the average sunshine duration in Port Clyde is 4.5h.

What is the month with the lowest UV index in Port Clyde?

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

What is the UV index reading in December in Port Clyde?

In Port Clyde, Maine, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Port Clyde, ME

Average temperature in December - Port Clyde, ME
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 28.4°F

The month with the highest average low temperature is August (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in December
Port Clyde, ME

Average pressure in December - Port Clyde, ME
  • Average pressure in December: 30"Hg

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Port Clyde, ME

Average wind speed in December - Port Clyde, ME
  • Average wind speed in December: 14.4mph

The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).

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Average humidity in December
Port Clyde, ME

Average humidity in December - Port Clyde, ME
  • Average humidity in December: 77%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in December
Port Clyde, ME

Average rainfall in December - Port Clyde, ME
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in December
Port Clyde, ME

Average rainfall days in December - Port Clyde, ME
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in December
Port Clyde, ME

Average snowfall in December - Port Clyde, ME
  • Average snowfall in December: 1.81"

The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Port Clyde, ME

Average snowfall days in December - Port Clyde, ME
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Port Clyde, ME

Average daylight in December / Average sunshine in December - Port Clyde, ME
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).

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Average sunshine days in December
Port Clyde, ME

Average sunshine days in December - Port Clyde, ME
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index in December
Port Clyde, ME

Average UV index in December - Port Clyde, ME
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 5).
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
Port Clyde, ME

Average cloud cover in December - Port Clyde, ME
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Port Clyde, ME

Average visibility in December - Port Clyde, ME
  • 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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Port Clyde, Maine, USA

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