December weather forecast
South Newbury, NH

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Weather in December

December, the first month of the winter in South Newbury, is also a subzero cold month, with an average temperature varying between 21°F (-6.1°C) and 31.3°F (-0.4°C).

Temperature

The start of December signals a decrease in the average high-temperature, transitioning from an icy 42.4°F (5.8°C) in November to a freezing cold 31.3°F (-0.4°C). Throughout December, the temperature falls to an average low of 21°F (-6.1°C).

Humidity

In South Newbury, the average relative humidity in December is 83%.

Rainfall

In South Newbury, in December, during 8.1 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, in South Newbury, there are 121.9 rainfall days, and 13.58" (345mm) of precipitation is accumulated.

Snowfall

Months with snowfall in South Newbury are January through May, October through December. In South Newbury, during December, snow falls for 11.2 days and regularly aggregates up to 2.6" (66mm) of snow. In South Newbury, during the entire year, snow falls for 65.7 days and aggregates up to 19.88" (505mm) of snow.

Daylight

The month with the shortest days in South Newbury is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:01 am and sunset at 4:13 pm. On the last day of December, in South Newbury, sunrise is at 7:20 am and sunset at 4:22 pm EST.

Sunshine

In December, the average sunshine is 4.2h.

UV index

February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 1 during December translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is it in South Newbury in December?

December temperatures vary between a high-temperature of 31.3°F (-0.4°C) and a low-temperature of 21°F (-6.1°C).

What is the average humidity in December in South Newbury?

The average relative humidity in December in South Newbury, New Hampshire, is 83%.

How many days does it rain in December in South Newbury?

In December, the rain falls for 8.1 days. Throughout December, 1.02" (26mm) of precipitation is accumulated.

How many days does it snow in December in South Newbury?

In South Newbury, New Hampshire, in December, during 11.2 snowfall days, 2.6" (66mm) of snow is typically accumulated.

What is the month with the shortest days in South Newbury?

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

How many hours of daylight does South Newbury have in December?

In December, the average day length in South Newbury is 9h and 2min.

When are sunrise and sunset in December in South Newbury?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:13 pm. On the last day of the month, in South Newbury, New Hampshire, sunrise is at 7:20 am and sunset at 4:22 pm EST.

How many hours of sunshine does South Newbury have in December?

The average sunshine duration in December in South Newbury is 4.2h.

What is the month with the lowest UV index in South Newbury?

The months with the lowest UV index in South Newbury are February and December, with an average maximum UV index of 1.

What is the UV index reading in December in South Newbury?

The average daily maximum UV index in December in South Newbury is 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's 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
South Newbury, NH

Average temperature in December - South Newbury, NH
  • Average high temperature in December: 31.3°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 (25.5°F).

  • Average low temperature in December: 21°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 (13.1°F).

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Average pressure in December
South Newbury, NH

Average pressure in December - South Newbury, NH
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
South Newbury, NH

Average wind speed in December - South Newbury, NH
  • Average wind speed in December: 7.3mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
South Newbury, NH

Average humidity in December - South Newbury, NH
  • Average humidity in December: 83%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in December
South Newbury, NH

Average rainfall in December - South Newbury, NH
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in December
South Newbury, NH

Average rainfall days in December - South Newbury, NH
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in December
South Newbury, NH

Average snowfall in December - South Newbury, NH
  • Average snowfall in December: 2.6"

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
South Newbury, NH

Average snowfall days in December - South Newbury, NH
  • Average snowfall days in December: 11.2 days

The month with the highest number of snowfall days is February (13.9 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
South Newbury, NH

Average daylight in December / Average sunshine in December - South Newbury, NH
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

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Average sunshine days in December
South Newbury, NH

Average sunshine days in December - South Newbury, NH
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is April (12.9 days).

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Average UV index in December
South Newbury, NH

Average UV index in December - South Newbury, NH
  • Average UV index in December: 1

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

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Average cloud cover in December
South Newbury, NH

Average cloud cover in December - South Newbury, NH
  • Average cloud cover in December: 56

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in December
South Newbury, NH

Average visibility in December - South Newbury, NH
  • Average visibility in December: 5mi

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

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South Newbury, New Hampshire, USA

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