December weather forecast
Penacook, NH

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Weather in December

The first month of the winter, December, is also an icy month in Penacook, New Hampshire, with an average temperature fluctuating between 33.1°F (0.6°C) and 22.8°F (-5.1°C).

Temperature

As December arrives, Penacook's weather displays a decrease in high-temperatures, transitioning from November's chilly 44.4°F (6.9°C) to an icy 33.1°F (0.6°C). Penacook's average low-temperature during December nights is observed to be a subzero cold 22.8°F (-5.1°C).

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Penacook, during December, the rain falls for 9.5 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 138.6 rainfall days, and 27.24" (692mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Penacook. In Penacook, during December, snow falls for 8.7 days and regularly aggregates up to 6.22" (158mm) of snow. Throughout the year, in Penacook, there are 48.2 snowfall days, and 30.71" (780mm) of snow is accumulated.

Daylight

The month with the shortest days in Penacook, New Hampshire, is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:11 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:20 pm EST.

Sunshine

In December, the average sunshine is 4.6h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is December in Penacook?

In Penacook, 33.1°F (0.6°C) is the average high-temperature and 22.8°F (-5.1°C) is the average low-temperature during December.

What is the average humidity in December in Penacook?

In Penacook, the average relative humidity in December is 81%.

How much does it rain in Penacook in December?

In Penacook, New Hampshire, in December, during 9.5 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

How much does it snow in Penacook in December?

In December, in Penacook, it is snowing for 8.7 days. Throughout December, 6.22" (158mm) of snow is accumulated.

What is the month with the shortest days in Penacook?

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 Penacook?

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

When is the sunrise / sunset in December in Penacook?

On the first day of December in Penacook, New Hampshire, sunrise is at 6:59 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:20 pm EST.

How long on average sun shines in December in Penacook?

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

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

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

How high is the UV index in December in Penacook?

In Penacook, New Hampshire, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Penacook, NH

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

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in December: 22.8°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

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Average pressure in December
Penacook, NH

Average pressure in December - Penacook, NH
  • Average pressure in December: 30.03"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
Penacook, NH

Average wind speed in December - Penacook, NH
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Penacook, NH

Average humidity in December - Penacook, NH
  • Average humidity in December: 81%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in December
Penacook, NH

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

The wettest month (with the highest rainfall) is October (3.15").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in December
Penacook, NH

Average rainfall days in December - Penacook, NH
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is April (15.2 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in December
Penacook, NH

Average snowfall in December - Penacook, NH
  • Average snowfall in December: 6.22"

The month with the highest snowfall is February (7.36").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Penacook, NH

Average snowfall days in December - Penacook, NH
  • Average snowfall days in December: 8.7 days

The month with the highest number of snowfall days is January (11 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
Penacook, NH

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

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 24min).

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Average sunshine days in December
Penacook, NH

Average sunshine days in December - Penacook, NH
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is April (12.4 days).

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Average UV index in December
Penacook, NH

Average UV index in December - Penacook, 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
Penacook, NH

Average cloud cover in December - Penacook, NH
  • Average cloud cover in December: 49

The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in December
Penacook, NH

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

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

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Penacook, New Hampshire, USA

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