December weather forecast
Lebanon, NH

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Weather in December

Rounding off the year, December in Lebanon marks the onset of winter. The city witnesses a growing frequency of snowfall, reaching up to 6.3" (160mm). Daylight diminishes further, making way for longer nights and a marked evening chill. Despite the increased snowfall, there is still a fair share of sunshine. As the year ends, Lebanon is cloaked in a stunning winter wonderland, bringing an enchanting end to the year.

Temperature

December weather in Lebanon is marked by a drop in the average high-temperature, falling from a wintry 42.3°F (5.7°C) in November to a subzero cold 30.7°F (-0.7°C). The average low-temperature during December nights is 20.8°F (-6.2°C).

Humidity

The average relative humidity in December in Lebanon is 83%.

Rainfall

In Lebanon, during December, the rain falls for 10.6 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Lebanon, New Hampshire, during the entire year, the rain falls for 156.4 days and collects up to 26.14" (664mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Lebanon, during December, snow falls for 14.1 days and regularly aggregates up to 6.3" (160mm) of snow. In Lebanon, during the entire year, snow falls for 74.2 days and aggregates up to 35.67" (906mm) of snow.

Daylight

The month with the shortest days in Lebanon, New Hampshire, is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:22 pm EST.

Sunshine

The average sunshine in December in Lebanon, New Hampshire, is 4h.

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 exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 1 in December translates into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

How cold is it in Lebanon in December?

In December, the average high-temperature and low-temperature in Lebanon, New Hampshire, are 30.7°F (-0.7°C) and 20.8°F (-6.2°C) respectively.

What is the average humidity in December in Lebanon?

The average relative humidity in December is 83%.

How many days does it rain in December in Lebanon?

In Lebanon, in December, it is raining for 10.6 days, with typically 2.24" (57mm) of accumulated precipitation.

How much does it snow in Lebanon in December?

In December, in Lebanon, New Hampshire, it is snowing for 14.1 days. Throughout December, 6.3" (160mm) of snow is accumulated.

What is the month with the shortest days in Lebanon?

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

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

In Lebanon, New Hampshire, the average day length in December is 9h and 0min.

What time are sunrise and sunset in December in Lebanon?

On the first day of December in Lebanon, New Hampshire, sunrise is at 7:03 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:22 pm EST.

How many hours of sunshine does Lebanon have in December?

In Lebanon, the average sunshine duration in December is 4h.

What are the months with the lowest UV index in Lebanon?

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

What is the UV index reading in December in Lebanon?

The average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe 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
Lebanon, NH

Average temperature in December - Lebanon, NH
  • Average high temperature in December: 30.7°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in December: 20.8°F

The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in December
Lebanon, NH

Average pressure in December - Lebanon, 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
Lebanon, NH

Average wind speed in December - Lebanon, NH
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
Lebanon, NH

Average humidity in December - Lebanon, 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 May (75%).

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Average rainfall in December
Lebanon, NH

Average rainfall in December - Lebanon, NH
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is October (2.87").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in December
Lebanon, NH

Average rainfall days in December - Lebanon, NH
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in December
Lebanon, NH

Average snowfall in December - Lebanon, NH
  • Average snowfall in December: 6.3"

The month with the highest snowfall is February (9.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Lebanon, NH

Average snowfall days in December - Lebanon, NH
  • Average snowfall days in December: 14.1 days

The month with the highest number of snowfall days is January (16.3 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
Lebanon, NH

Average daylight in December / Average sunshine in December - Lebanon, NH
  • 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 0min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

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Average sunshine days in December
Lebanon, NH

Average sunshine days in December - Lebanon, NH
  • Average sunshine days in December: 11.8 days

The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is March (9.7 days).

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Average UV index in December
Lebanon, NH

Average UV index in December - Lebanon, 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
Lebanon, NH

Average cloud cover in December - Lebanon, NH
  • Average cloud cover in December: 59

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in December
Lebanon, NH

Average visibility in December - Lebanon, NH
  • Average visibility in December: 5mi

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

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Lebanon, New Hampshire, USA

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