December weather forecast
Brunswick, ME

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The calm Androscoggin River in Brunswick, Maine, with a rail bridge on it and scenic brown and golden trees on both sides mirrored in the water
The calm Androscoggin River in Brunswick, Maine, with a rail bridge on it and scenic brown and golden trees on both sides mirrored in the water

Weather in December

December ushers in the chills of winter in Brunswick, Maine. The temperature further drops to the lower end of the thermometer with average lows of 25.9°F (-3.4°C), reminiscent of the year's start. Snowfall makes a comeback with 2.4" (61mm), making the landscape reminiscent of a classic winter tale. The month also carries the least daylight hours of the year. Compared to November, December intensifies the wintry episode unfolding in Brunswick, promising a classic white holiday season.

Temperature

The onset of December introduces a moderate change in Brunswick's weather, with average high-temperatures falling from November's chilly 45.5°F (7.5°C) to a cold 35.2°F (1.8°C). Brunswick throughout December, records an average low-temperature of 25.9°F (-3.4°C).

Humidity

The average relative humidity in December is 77%.

Rainfall

In Brunswick, in December, during 7.3 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 115.5 rainfall days, and 15.51" (394mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Brunswick, Maine, during December, snow falls for 6.4 days and regularly aggregates up to 2.4" (61mm) of snow. Throughout the year, there are 32.1 snowfall days, and 10.75" (273mm) 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, sunrise is at 6:54 am and sunset at 4:03 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:12 pm EST.

Sunshine

The month with the least sunshine is December, with an average of 4.6h of sunshine.

UV index

The months with the lowest UV index in Brunswick 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 unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 2 in December translates into these instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In December, in Brunswick, the average high-temperature is 35.2°F (1.8°C), and the average low-temperature is 25.9°F (-3.4°C).

What is the average humidity in December?

The average relative humidity in December is 77%.

How much does it rain in December?

In Brunswick, Maine, in December, it is raining for 7.3 days, with typically 1.46" (37mm) of accumulated precipitation.

How many days does it snow in December?

In Brunswick, Maine, in December, snow falls for 6.4 days, with typically accumulated 2.4" (61mm) of snow.

What is the month with the shortest days?

With an average of 9h and 0min of daylight, December has the shortest days of the year.

How many hours of daylight does Brunswick have in December?

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

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:54 am and sunset at 4:03 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:12 pm EST.

What is the month with the least sunshine in Brunswick?

December has the least sunshine of the year, with an average of 4.6h of sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 4.6h.

When is the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from 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
Brunswick, ME

Average temperature in December - Brunswick, ME
  • Average high temperature in December: 35.2°F

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

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
Brunswick, ME

Average pressure in December - Brunswick, ME
  • Average pressure in December: 30.01"Hg

The month with the highest atmospheric pressure is September (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Brunswick, ME

Average wind speed in December - Brunswick, ME
  • Average wind speed in December: 10.4mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in December
Brunswick, ME

Average humidity in December - Brunswick, ME
  • Average humidity in December: 77%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (75%).

Average rainfall in December
Brunswick, ME

Average rainfall in December - Brunswick, ME
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is October (1.85").
The driest month (with the least rainfall) is September (0.75").

Average rainfall days in December
Brunswick, ME

Average rainfall days in December - Brunswick, ME
  • Average rainfall days in December: 7.3 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is February (4.8 days).

Average snowfall in December
Brunswick, ME

Average snowfall in December - Brunswick, ME
  • Average snowfall in December: 2.4"

The month with the highest snowfall is February (2.95").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Brunswick, ME

Average snowfall days in December - Brunswick, ME
  • Average snowfall days in December: 6.4 days

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

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

Average daylight in December / Average sunshine in December - Brunswick, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in December
Brunswick, ME

Average sunshine days in December - Brunswick, ME
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is April (15 days).

Average UV index in December
Brunswick, ME

Average UV index in December - Brunswick, 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).

Average cloud cover in December
Brunswick, ME

Average cloud cover in December - Brunswick, ME
  • Average cloud cover in December: 50

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in December
Brunswick, ME

Average visibility in December - Brunswick, 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).

Brunswick, Maine, USA

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