December weather forecast
Long Neck, DE

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Weather in December

December welcomes the official start of winter in Long Neck, exhibiting the typical signs of the season with cold temperatures and short daylight hours. Stepping down further in the cold ladder with temperatures consistently under 50°F (10°C), December days and nights become increasingly frosty. Ice skating, snowball fights, and warm drinks by the fire become common as residents prepare for the festive season. The dwindling daylight hours of December set the stage for a winter wonderland after sunset. The weather incites the anticipation of a new year to come, closing the current one on a chilly yet enchanted note.

Temperature

During the shift to December, a minor reduction in average high-temperature is observed, shifting from a cool 54.9°F (12.7°C) in November to a chilly 47.5°F (8.6°C). During December, the average low-temperature in Long Neck is a wintry 37.8°F (3.2°C).

Humidity

In Long Neck, the average relative humidity in December is 76%.

Rainfall

In December, the rain falls for 9.7 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. Throughout the year, in Long Neck, there are 147.1 rainfall days, and 25.59" (650mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Long Neck, during December, snow falls for 1.9 days and regularly aggregates up to 0.43" (11mm) of snow. In Long Neck, during the entire year, snow falls for 9.4 days and aggregates up to 3.39" (86mm) of snow.

Ocean temperature

In Long Neck, in December, the average water temperature is 48.7°F (9.3°C).
Note: Swimming in 48.7°F (9.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The month with the shortest days in Long Neck is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:49 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the UV index of 2 transforms into the following advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Experience reduced UV exposure by about half when donning a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the usual temperature for Long Neck in December?

In December, in Long Neck, the average high-temperature is 47.5°F (8.6°C), and the average low-temperature is 37.8°F (3.2°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is appraised at 86°F (30°C).

What is the average humidity in December in Long Neck?

In December, the average relative humidity in Long Neck, Delaware, is 76%.

How much does it rain in Long Neck in December?

In Long Neck, during December, the rain falls for 9.7 days and regularly aggregates up to 1.69" (43mm) of precipitation.

How many days does it snow in December in Long Neck?

In Long Neck, Delaware, in December, snow falls for 1.9 days, with typically accumulated 0.43" (11mm) of snow.

What is the water temperature in December in Long Neck?

In December, the average ocean temperature in Long Neck, Delaware, is 48.7°F (9.3°C). Swimming in 48.7°F (9.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Long Neck?

The month with the shortest days in Long Neck, Delaware, is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Long Neck have in December?

In December, the average day length is 9h and 31min.

When is the sunrise / sunset in December in Long Neck?

On the first day of December in Long Neck, Delaware, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:49 pm EST.

How many hours of sunshine does Long Neck have in December?

In December, the average sunshine duration is 5.2h.

When is the lowest UV index in Long Neck?

The months with the lowest UV index in Long Neck, Delaware, are January and December, with an average maximum UV index of 2.

What is the UV index reading in December in Long Neck?

In Long Neck, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Long Neck, DE

Average temperature in December - Long Neck, DE
  • Average high temperature in December: 47.5°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in December: 37.8°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in December
Long Neck, DE

Average pressure in December - Long Neck, DE
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Long Neck, DE

Average wind speed in December - Long Neck, DE
  • Average wind speed in December: 10.5mph

The windiest months (with the highest average wind speed) are January, February and March (11.1mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

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Average humidity in December
Long Neck, DE

Average humidity in December - Long Neck, DE
  • Average humidity in December: 76%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January and November (74%).

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Average rainfall in December
Long Neck, DE

Average rainfall in December - Long Neck, DE
  • Average rainfall in December: 1.69"

The wettest months (with the highest rainfall) are July and August (2.95").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in December
Long Neck, DE

Average rainfall days in December - Long Neck, DE
  • Average rainfall days in December: 9.7 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in December
Long Neck, DE

Average snowfall in December - Long Neck, DE
  • Average snowfall in December: 0.43"

The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Long Neck, DE

Average snowfall days in December - Long Neck, DE
  • Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in December
Long Neck, DE

Average sea temperature in December - Long Neck, DE
  • Average sea temperature in December: 48.8°F

The best month for swimming (with the highest average sea temperature) is August (76.9°F).
The coldest month (with the lowest average sea temperature) is February (40.7°F).

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Average daylight in December /
Average sunshine in December
Long Neck, DE

Average daylight in December / Average sunshine in December - Long Neck, DE
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in December
Long Neck, DE

Average sunshine days in December - Long Neck, DE
  • Average sunshine days in December: 18.9 days

The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is July (12.2 days).

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Average UV index in December
Long Neck, DE

Average UV index in December - Long Neck, DE
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Long Neck, DE

Average cloud cover in December - Long Neck, DE
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in December
Long Neck, DE

Average visibility in December - Long Neck, DE
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Long Neck, Delaware, USA

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