December weather forecast
Lancaster, NH

Weather in December

December, the first month of the winter in Lancaster, is still a freezing cold month, with an average temperature varying between 27.7°F (-2.4°C) and 17.2°F (-8.2°C).

Temperature

In Lancaster, the average high-temperature in December drops from a cold 38.8°F (3.8°C) in November to a subzero cold 27.7°F (-2.4°C). In December, the average low-temperature is 17.2°F (-8.2°C).

Humidity

The average relative humidity in December is 86%.

Rainfall

In Lancaster, it is raining for 9.2 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, there are 150.5 rainfall days, and 27.99" (711mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Lancaster, during 20 snowfall days, 9.53" (242mm) of snow is typically accumulated. In Lancaster, during the entire year, snow falls for 104.2 days and aggregates up to 61.02" (1550mm) of snow.

Daylight

The month with the shortest days in Lancaster is December, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:08 pm. On the last day of December, in Lancaster, sunrise is at 7:22 am and sunset at 4:16 pm EST.

Sunshine

In December, the average sunshine in Lancaster, New Hampshire, is 3h.

UV index

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Lancaster, New Hampshire. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 1 translate 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. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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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FAQ

What is the average humidity in December in Lancaster?

In December, the average relative humidity in Lancaster, New Hampshire, is 86%.

How much does it rain in Lancaster in December?

In Lancaster, during December, the rain falls for 9.2 days and regularly aggregates up to 2.48" (63mm) of precipitation.

How many days does it snow in December in Lancaster?

In Lancaster, New Hampshire, in December, snow falls for 20 days, with typically accumulated 9.53" (242mm) of snow.

What is the month with the shortest days in Lancaster?

The month with the shortest days in Lancaster is December, with an average of 8h and 54min of daylight.

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

The average day length in December in Lancaster is 8h and 54min.

When is the sunrise / sunset in December in Lancaster?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:08 pm. On the last day of the month, in Lancaster, sunrise is at 7:22 am and sunset at 4:16 pm EST.

How long on average sun shines in December in Lancaster?

In Lancaster, New Hampshire, the average sunshine duration in December is 3h.

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

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

What is the UV index reading in December in Lancaster?

The average daily maximum UV index in December in Lancaster is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Lancaster, NH

Average temperature in December - Lancaster, NH
  • Average high temperature in December: 27.7°F

The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in December: 17.2°F

The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is January (9°F).

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Average pressure in December
Lancaster, NH

Average pressure in December - Lancaster, NH
  • 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).

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Average wind speed in December
Lancaster, NH

Average wind speed in December - Lancaster, NH
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Lancaster, NH

Average humidity in December - Lancaster, NH
  • Average humidity in December: 86%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in December
Lancaster, NH

Average rainfall in December - Lancaster, NH
  • Average rainfall in December: 2.48"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is August (1.97").

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Average rainfall days in December
Lancaster, NH

Average rainfall days in December - Lancaster, NH
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (5 days).

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Average snowfall in December
Lancaster, NH

Average snowfall in December - Lancaster, NH
  • Average snowfall in December: 9.53"

The month with the highest snowfall is February (13.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Lancaster, NH

Average snowfall days in December - Lancaster, NH
  • Average snowfall days in December: 20 days

The month with the highest number of snowfall days is January (21.4 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
Lancaster, NH

Average daylight in December / Average sunshine in December - Lancaster, NH
  • Average daylight in December: 8h and 54min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).

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Average sunshine days in December
Lancaster, NH

Average sunshine days in December - Lancaster, NH
  • Average sunshine days in December: 8 days

The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is February (6.3 days).

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Average UV index in December
Lancaster, NH

Average UV index in December - Lancaster, NH
  • Average UV index in December: 1

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

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Average cloud cover in December
Lancaster, NH

Average cloud cover in December - Lancaster, NH
  • Average cloud cover in December: 72

The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 42).

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Average visibility in December
Lancaster, NH

Average visibility in December - Lancaster, NH
  • Average visibility in December: 4mi

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

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