December weather forecast
Hanover, NH

Weather in December

The first month of the winter, December, is still a freezing cold month in Hanover, New Hampshire, with an average temperature varying between 20.8°F (-6.2°C) and 30.7°F (-0.7°C).

Temperature

In December, the average high-temperature drops from a cold 41.9°F (5.5°C) in November to a subzero cold 30.7°F (-0.7°C). In Hanover, New Hampshire, in December, the average low-temperature is 20.8°F (-6.2°C).

Humidity

The average relative humidity in December is 83%.

Rainfall

In Hanover, during December, the rain falls for 10.9 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, in Hanover, there are 156.9 rainfall days, and 28.23" (717mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Hanover are January through May, October through December. In Hanover, New Hampshire, during December, snow falls for 13.5 days and regularly aggregates up to 6.85" (174mm) of snow. In Hanover, during the entire year, snow falls for 75.5 days and aggregates up to 40.83" (1037mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 59min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:21 pm EST.

Sunshine

The average sunshine in December in Hanover is 4h.

UV index

The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Hanover?

In Hanover, New Hampshire, the average relative humidity in December is 83%.

How much does it rain in Hanover in December?

In December, in Hanover, the rain falls for 10.9 days. Throughout December, 2.48" (63mm) of precipitation is accumulated.

How many days does it snow in December in Hanover?

In December, it is snowing for 13.5 days. Throughout December, 6.85" (174mm) of snow is accumulated.

What is the month with the shortest days in Hanover?

December has the shortest days of the year in Hanover, New Hampshire, with an average of 8h and 59min of daylight.

How many hours of daylight does Hanover have in December?

In Hanover, the average day length in December is 8h and 59min.

What time are sunrise and sunset in December in Hanover?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:13 pm. On the last day of the month, in Hanover, sunrise is at 7:22 am and sunset at 4:21 pm EST.

How many hours of sunshine does Hanover have in December?

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

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

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

What is the UV index reading in December in Hanover?

In December, the average daily maximum UV index in Hanover, New Hampshire, is 1. A UV Index of 2, and less, symbolizes a low health threat 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
Hanover, NH

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

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in December: 20.8°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in December
Hanover, NH

Average pressure in December - Hanover, 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
Hanover, NH

Average wind speed in December - Hanover, 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
Hanover, NH

Average humidity in December - Hanover, 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
Hanover, NH

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

The wettest month (with the highest rainfall) is October (2.99").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in December
Hanover, NH

Average rainfall days in December - Hanover, NH
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (7.9 days).

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Average snowfall in December
Hanover, NH

Average snowfall in December - Hanover, NH
  • Average snowfall in December: 6.85"

The month with the highest snowfall is February (11.57").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Hanover, NH

Average snowfall days in December - Hanover, NH
  • Average snowfall days in December: 13.5 days

The month with the highest number of snowfall days is January (16.5 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
Hanover, NH

Average daylight in December / Average sunshine in December - Hanover, NH
  • Average daylight in December: 8h and 59min

The month with the longest days is June (Average daylight: 15h and 23min).
The month with the shortest days is December (Average daylight: 8h and 59min).

  • 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
Hanover, NH

Average sunshine days in December - Hanover, NH
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is February (9.8 days).

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Average UV index in December
Hanover, NH

Average UV index in December - Hanover, 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
Hanover, NH

Average cloud cover in December - Hanover, 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
Hanover, NH

Average visibility in December - Hanover, 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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