December weather forecast
Henniker, NH

Weather in December

December, the first month of the winter in Henniker, is also a wintry month, with an average temperature ranging between max 33.1°F (0.6°C) and min 22.5°F (-5.3°C).

Temperature

In December, the average high-temperature decreases from a chilly 44.2°F (6.8°C) in November to a wintry 33.1°F (0.6°C). The average low-temperature, in December, is 22.5°F (-5.3°C).

Humidity

In Henniker, the average relative humidity in December is 82%.

Rainfall

In Henniker, during December, the rain falls for 9.3 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, in Henniker, New Hampshire, there are 149.8 rainfall days, and 27.95" (710mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Henniker. In Henniker, during December, snow falls for 9.8 days and regularly aggregates up to 6.89" (175mm) of snow. Throughout the year, in Henniker, there are 54.7 snowfall days, and 34.06" (865mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 3min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:21 pm EST.

Sunshine

The average sunshine in December is 4.6h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Henniker. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Henniker?

The average relative humidity in December is 82%.

How many days does it rain in December in Henniker?

In Henniker, New Hampshire, in December, during 9.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

How much does it snow in Henniker in December?

In Henniker, in December, during 9.8 snowfall days, 6.89" (175mm) of snow is typically accumulated.

What is the month with the shortest days in Henniker?

With an average of 9h and 3min of daylight, December has the shortest days of the year in Henniker, New Hampshire.

How many hours of daylight does Henniker have in December?

In Henniker, the average day length in December is 9h and 3min.

When are sunrise and sunset in December in Henniker?

On the first day of December, sunrise is at 6:59 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:21 pm EST.

How long on average sun shines in December in Henniker?

In December, the average sunshine duration in Henniker, New Hampshire, is 4.6h.

What is the month with the lowest UV index in Henniker?

The months with the lowest UV index in Henniker, New Hampshire, are January through March, October through December, with an average maximum UV index of 2.

How high is the UV index in December in Henniker?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Henniker, NH

Average temperature in December - Henniker, NH
  • Average high temperature in December: 33.1°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in December: 22.5°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

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Average pressure in December
Henniker, NH

Average pressure in December - Henniker, 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 (29.92"Hg).

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Average wind speed in December
Henniker, NH

Average wind speed in December - Henniker, NH
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Henniker, NH

Average humidity in December - Henniker, NH
  • Average humidity in December: 82%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in December
Henniker, NH

Average rainfall in December - Henniker, NH
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in December
Henniker, NH

Average rainfall days in December - Henniker, NH
  • Average rainfall days in December: 9.3 days

The months with the highest number of rainy days are May and June (15.8 days).
The month with the least rainy days is February (8.1 days).

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Average snowfall in December
Henniker, NH

Average snowfall in December - Henniker, NH
  • Average snowfall in December: 6.89"

The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Henniker, NH

Average snowfall days in December - Henniker, NH
  • Average snowfall days in December: 9.8 days

The month with the highest number of snowfall days is March (12.2 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
Henniker, NH

Average daylight in December / Average sunshine in December - Henniker, NH
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 20min).
The month with the shortest days is December (Average daylight: 9h and 3min).

  • Average sunshine in December: 4h and 36min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in December
Henniker, NH

Average sunshine days in December - Henniker, NH
  • Average sunshine days in December: 14.7 days

The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is March (11.3 days).

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Average UV index in December
Henniker, NH

Average UV index in December - Henniker, NH
  • Average UV index in December: 2

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
Henniker, NH

Average cloud cover in December - Henniker, NH
  • Average cloud cover in December: 51

The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in December
Henniker, NH

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

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

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