December weather forecast
Bass Harbor, ME

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Weather in December

December, the first month of the winter in Bass Harbor, is also an icy month, with an average temperature varying between 35.1°F (1.7°C) and 25.7°F (-3.5°C).

Temperature

December weather is marked by a drop in the average high-temperature, falling from a chilly 44.8°F (7.1°C) in November to an icy 35.1°F (1.7°C). Bass Harbor in December anticipates an average nighttime temperature of 25.7°F (-3.5°C).

Humidity

In Bass Harbor, the average relative humidity in December is 78%.

Rainfall

December is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.94" (100mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Bass Harbor. In Bass Harbor, in December, snow falls for 7.9 days, with typically accumulated 3.78" (96mm) of snow. In Bass Harbor, during the entire year, snow falls for 48.1 days and aggregates up to 23.82" (605mm) of snow.

Daylight

December has the shortest days of the year in Bass Harbor, with an average of 8h and 54min of daylight.
On the first day of December in Bass Harbor, sunrise is at 6:49 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:04 pm EST.

Sunshine

In December, the average sunshine in Bass Harbor is 4.4h.

UV index

The months with the lowest UV index in Bass Harbor, Maine, are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

How cold is December in Bass Harbor?

In Bass Harbor, in December, the average high-temperature is 35.1°F (1.7°C), and the average low-temperature is 25.7°F (-3.5°C).

What is the average humidity in December in Bass Harbor?

The average relative humidity in December in Bass Harbor, Maine, is 78%.

What is the wettest month in Bass Harbor?

December is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.94" (100mm) of precipitation.

How much does it rain in Bass Harbor in December?

In December, the rain falls for 11.5 days. Throughout December, 3.94" (100mm) of precipitation is accumulated.

How many days does it snow in December in Bass Harbor?

In Bass Harbor, during December, snow falls for 7.9 days and regularly aggregates up to 3.78" (96mm) of snow.

What is the month with the shortest days in Bass Harbor?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Bass Harbor.

How many hours of daylight does Bass Harbor have in December?

In Bass Harbor, the average day length in December is 8h and 56min.

When are sunrise and sunset in December in Bass Harbor?

On the first day of December in Bass Harbor, sunrise is at 6:49 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:04 pm EST.

How many hours of sunshine does Bass Harbor have in December?

In December, the average sunshine duration in Bass Harbor, Maine, is 4.4h.

What are the months with the lowest UV index in Bass Harbor?

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

What is the UV index reading in December in Bass Harbor?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
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
Bass Harbor, ME

Average temperature in December - Bass Harbor, ME
  • Average high temperature in December: 35.1°F

The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

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Average pressure in December
Bass Harbor, ME

Average pressure in December - Bass Harbor, ME
  • Average pressure in December: 29.99"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
Bass Harbor, ME

Average wind speed in December - Bass Harbor, ME
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in December
Bass Harbor, ME

Average humidity in December - Bass Harbor, ME
  • Average humidity in December: 78%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in December
Bass Harbor, ME

Average rainfall in December - Bass Harbor, ME
  • Average rainfall in December: 3.94"

The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").

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Average rainfall days in December
Bass Harbor, ME

Average rainfall days in December - Bass Harbor, ME
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).

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Average snowfall in December
Bass Harbor, ME

Average snowfall in December - Bass Harbor, ME
  • Average snowfall in December: 3.78"

The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Bass Harbor, ME

Average snowfall days in December - Bass Harbor, ME
  • Average snowfall days in December: 7.9 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Bass Harbor, ME

Average daylight in December / Average sunshine in December - Bass Harbor, ME
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days in December
Bass Harbor, ME

Average sunshine days in December - Bass Harbor, ME
  • Average sunshine days in December: 14.1 days

The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).

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Average UV index in December
Bass Harbor, ME

Average UV index in December - Bass Harbor, 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
Bass Harbor, ME

Average cloud cover in December - Bass Harbor, ME
  • Average cloud cover in December: 53

The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).

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Average visibility in December
Bass Harbor, ME

Average visibility in December - Bass Harbor, ME
  • Average visibility in December: 6mi

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

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Bass Harbor, Maine, USA

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