December weather forecast
New Boston, ME

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Weather in December

The first month of the winter, December, is still a freezing cold month in New Boston, Maine, with temperature in the range of an average high of 31.5°F (-0.3°C) and an average low of 20.3°F (-6.5°C).

Temperature

The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a frosty 43°F (6.1°C) in November to a subzero cold 31.5°F (-0.3°C). Throughout December, an average low-temperature of 20.3°F (-6.5°C) is expected in New Boston.

Humidity

The average relative humidity in December in New Boston is 80%.

Rainfall

In New Boston, in December, it is raining for 9.4 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, in New Boston, there are 131.2 rainfall days, and 25.59" (650mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In New Boston, in December, snow falls for 8.9 days, with typically accumulated 6.42" (163mm) of snow. In New Boston, during the entire year, snow falls for 49.8 days and aggregates up to 38.19" (970mm) of snow.

Daylight

December has the shortest days of the year in New Boston, with an average of 9h and 0min of daylight.
On the first day of December in New Boston, sunrise is at 6:58 am and sunset at 4:07 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:16 pm EST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in New Boston?

The high-temperature in New Boston, Maine, during December is 31.5°F (-0.3°C) and the low-temperature is 20.3°F (-6.5°C).

What is the average humidity in December in New Boston?

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

How much does it rain in New Boston in December?

In New Boston, during December, the rain falls for 9.4 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How many days does it snow in December in New Boston?

In New Boston, Maine, during December, snow falls for 8.9 days and regularly aggregates up to 6.42" (163mm) of snow.

What is the month with the shortest days in New Boston?

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

How many hours of daylight does New Boston have in December?

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

When is the sunrise / sunset in December in New Boston?

On the first day of December in New Boston, sunrise is at 6:58 am and sunset at 4:07 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:16 pm EST.

How long on average sun shines in December in New Boston?

The average sunshine duration in December in New Boston, Maine, is 4.9h.

What is the UV index reading in December in New Boston?

The average daily maximum UV index in December in New Boston, Maine, is 2. A UV Index reading of 2, and below, represents a low health threat 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
New Boston, ME

Average temperature in December - New Boston, ME
  • Average high temperature in December: 31.5°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in December: 20.3°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

Average pressure in December
New Boston, ME

Average pressure in December - New Boston, ME
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
New Boston, ME

Average wind speed in December - New Boston, ME
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
New Boston, ME

Average humidity in December - New Boston, ME
  • Average humidity in December: 80%

The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is November (76%).

Average rainfall in December
New Boston, ME

Average rainfall in December - New Boston, ME
  • Average rainfall in December: 2.6"

The wettest months (with the highest rainfall) are April and October (2.64").
The driest month (with the least rainfall) is September (1.22").

Average rainfall days in December
New Boston, ME

Average rainfall days in December - New Boston, ME
  • Average rainfall days in December: 9.4 days

The months with the highest number of rainy days are April and July (14.3 days).
The month with the least rainy days is February (6.3 days).

Average snowfall in December
New Boston, ME

Average snowfall in December - New Boston, ME
  • Average snowfall in December: 6.42"

The month with the highest snowfall is February (9.88").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
New Boston, ME

Average snowfall days in December - New Boston, ME
  • Average snowfall days in December: 8.9 days

The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
New Boston, ME

Average daylight in December / Average sunshine in December - New Boston, 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 5min

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 36min).

Average sunshine days in December
New Boston, ME

Average sunshine days in December - New Boston, ME
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (12.4 days).

Average UV index in December
New Boston, ME

Average UV index in December - New Boston, ME
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in December
New Boston, ME

Average cloud cover in December - New Boston, ME
  • Average cloud cover in December: 48

The month with the most cloud cover is March (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 36).

Average visibility in December
New Boston, ME

Average visibility in December - New Boston, ME
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

New Boston, Maine, USA

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