December weather forecast and climate
Winterport, ME

Weather in December

The first month of the winter, December, is also a wintry month in Winterport, Maine, with average temperature fluctuating between 33.3°F (0.7°C) and 22.8°F (-5.1°C).

Temperature

In Winterport, the average high-temperature in December drops, from a frosty 44.4°F (6.9°C) in November, to a cold 33.3°F (0.7°C). In December, in Winterport, Maine, the average low-temperature is 22.8°F (-5.1°C).

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Winterport, in December, it is raining for 10.6 days, with typically 2.68" (68mm) of accumulated precipitation. In Winterport, during the entire year, the rain falls for 144.3 days and collects up to 24.61" (625mm) of precipitation.

Snowfall

Months with snowfall in Winterport, Maine, are January through May, October through December. In December, it is snowing for 8.9 days. Throughout December, 2.8" (71mm) of snow is accumulated. In Winterport, during the entire year, snow falls for 46.8 days, and aggregates up to 19.61" (498mm) of snow.

Ocean temperature

In December, the average ocean temperature is 44.2°F (6.8°C).
Note: Swimming in 44.2°F (6.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

With an average of 8.9h of daylight, December has the shortest days of the year in Winterport.

Sunshine

In Winterport, the average sunshine in December is 4.4h.

UV index

Months with the lowest UV index in Winterport are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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 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 average humidity in December in Winterport?

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

How much does it rain in Winterport in December?

In Winterport, Maine, in December, it is raining for 10.6 days, with typically 2.68" (68mm) of accumulated precipitation.

How much does it snow in Winterport in December?

In December, it is snowing for 8.9 days. Throughout December, 2.8" (71mm) of snow is accumulated.

What is the ocean temperature in December in Winterport?

In Winterport, Maine, the average seawater temperature in December is 44.2°F (6.8°C). Swimming in 44.2°F (6.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Winterport?

December has the shortest days of the year, with an average of 8.9h of daylight.

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

In December, the average length of the day is 8.9h.

How long on average sun shines in December in Winterport?

In December, the average sunshine is 4.4h.

When is the lowest UV index in Winterport?

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

What is the UV index reading in December in Winterport?

In Winterport, Maine, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.

Average temperature in December
Winterport, ME

Average temperature in December - Winterport, ME
  • Average high temperature in December: 33.3°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 22.8°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

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Average pressure in December
Winterport, ME

Average pressure in December - Winterport, ME
  • Average pressure in December: 29.99"

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

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Average wind speed in December
Winterport, ME

Average wind speed in December - Winterport, ME
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in December
Winterport, ME

Average humidity in December - Winterport, ME
  • Average humidity in December: 80%

The month with the highest relative humidity is February (84%).
Months with the lowest relative humidity are April and November (77%).

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Average rainfall in December
Winterport, ME

Average rainfall in December - Winterport, ME
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is July (1.42").

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Average rainfall days in December
Winterport, ME

Average rainfall days in December - Winterport, ME
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in December
Winterport, ME

Average snowfall in December - Winterport, ME
  • Average snowfall in December: 2.8"

The month with the highest snowfall is January (4.69").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Winterport, ME

Average snowfall days in December - Winterport, ME
  • Average snowfall days in December: 8.9 days

The month with the highest number of snowfall days is February (10.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Winterport, ME

Average sea temperature in December - Winterport, ME
  • Average sea temperature in December: 44.3°F

The best month for swimming (with the highest average sea temperature) is August (57.7°F).
The coldest month (with the lowest average sea temperature) is March (37.5°F).

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Average daylight in December /
Average sunshine in December
Winterport, ME

Average daylight in December / Average sunshine in December - Winterport, ME
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 4.4h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is February (Average sunshine: 4.1h).

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Average sunshine days in December
Winterport, ME

Average sunshine days in December - Winterport, ME
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.6 days).

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Average UV index in December
Winterport, ME

Average UV index in December - Winterport, ME
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
Winterport, ME

Average cloud cover in December - Winterport, ME
  • Average cloud cover in December: 52

Months with the most cloud cover are February, March and April (Cloud cover 55).
Months with the least cloud cover are August and September (Cloud cover 39).

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Average visibility in December
Winterport, ME

Average visibility in December - Winterport, ME
  • Average visibility in December: 6mi

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

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