December weather forecast
South Effingham, NH

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Weather in December

December, the first month of the winter in South Effingham, is also an icy month, with temperature in the range of an average low of 21.7°F (-5.7°C) and an average high of 33.1°F (0.6°C).

Temperature

South Effingham's progression into December includes a drop in the average high-temperature, from a frosty 44.2°F (6.8°C) in November to a wintry 33.1°F (0.6°C). South Effingham observes an average low-temperature of 21.7°F (-5.7°C) during December.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In December, in South Effingham, the rain falls for 8.8 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. Throughout the year, in South Effingham, there are 138 rainfall days, and 30.08" (764mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in South Effingham. In December, it is snowing for 8.9 days. Throughout December, 7.2" (183mm) of snow is accumulated. In South Effingham, during the entire year, snow falls for 48.9 days and aggregates up to 38.15" (969mm) of snow.

Daylight

With an average of 9h and 0min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:58 am and sunset at 4:08 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:17 pm EST.

Sunshine

The average sunshine in December is 4.7h.

UV index

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's radiation is especially intense around midday; try to stay in shade during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

How cold is December in South Effingham?

The high-temperature in South Effingham during December is 33.1°F (0.6°C) and the low-temperature is 21.7°F (-5.7°C).

What is the average humidity in December in South Effingham?

In South Effingham, New Hampshire, the average relative humidity in December is 81%.

How many days does it rain in December in South Effingham?

In December, the rain falls for 8.8 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

How much does it snow in South Effingham in December?

In South Effingham, in December, snow falls for 8.9 days, with typically accumulated 7.2" (183mm) of snow.

What is the month with the shortest days in South Effingham?

The month with the shortest days in South Effingham, New Hampshire, is December, with an average of 9h and 0min of daylight.

What is the average length of the day in December in South Effingham?

The average day length in December is 8h and 59min.

When is the sunrise / sunset in December in South Effingham?

In December, on the first day of the month, sunrise is at 6:58 am and sunset at 4:08 pm. On the last day of the month, in South Effingham, sunrise is at 7:17 am and sunset at 4:17 pm EST.

How many hours of sunshine does South Effingham have in December?

In South Effingham, the average sunshine duration in December is 4.7h.

What is the UV index intensity in December in South Effingham?

In December, the average daily maximum UV index in South Effingham, New Hampshire, is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
South Effingham, NH

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

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in December: 21.7°F

The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in December
South Effingham, NH

Average pressure in December - South Effingham, 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
South Effingham, NH

Average wind speed in December - South Effingham, NH
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in December
South Effingham, NH

Average humidity in December - South Effingham, NH
  • Average humidity in December: 81%

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April and November (77%).

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Average rainfall in December
South Effingham, NH

Average rainfall in December - South Effingham, NH
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is October (3.31").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in December
South Effingham, NH

Average rainfall days in December - South Effingham, NH
  • Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall in December
South Effingham, NH

Average snowfall in December - South Effingham, NH
  • Average snowfall in December: 7.2"

The month with the highest snowfall is February (9.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
South Effingham, NH

Average snowfall days in December - South Effingham, NH
  • Average snowfall days in December: 8.9 days

The month with the highest number of snowfall days is February (11.5 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
South Effingham, NH

Average daylight in December / Average sunshine in December - South Effingham, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
South Effingham, NH

Average sunshine days in December - South Effingham, NH
  • Average sunshine days in December: 16 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (13.2 days).

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Average UV index in December
South Effingham, NH

Average UV index in December - South Effingham, NH
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in December
South Effingham, NH

Average cloud cover in December - South Effingham, 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 36).

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Average visibility in December
South Effingham, NH

Average visibility in December - South Effingham, 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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South Effingham, New Hampshire, USA

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