December weather forecast
Edgemoor, DE

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Weather in December

December sees Edgemoor fully immersed in the winter season. The average high temperature drops to 44.1°F (6.7°C), making it one of the coldest months. Snowfall increases to an average of 0.98" (25mm) and daylight hours dwindle to their shortest in the year. Despite the cold, December's festive spirit ensures that the city remains active and lively. Overall, the weather paints a perfect picture of a mid-Atlantic winter, closing out the year on a chilly note.

Temperature

Observing a mild shift, the average high-temperature in Edgemoor during December reduces from November's fresh 53.2°F (11.8°C) to a frosty 44.1°F (6.7°C). December nights experience a consistent temperature drop to a cold 33.1°F (0.6°C).

Humidity

In December, the average relative humidity in Edgemoor is 77%.

Rainfall

In Edgemoor, Delaware, in December, it is raining for 10.1 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, there are 150.6 rainfall days, and 26.46" (672mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall in Edgemoor. In Edgemoor, during December, snow falls for 2.9 days and regularly aggregates up to 0.98" (25mm) of snow. In Edgemoor, Delaware, during the entire year, snow falls for 16.2 days and aggregates up to 6.93" (176mm) of snow.

Ocean temperature

In Edgemoor, Delaware, the average seawater temperature in December is 47.8°F (8.8°C).
Note: Swimming in 47.8°F (8.8°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:38 pm. On the last day of December, in Edgemoor, sunrise is at 7:22 am and sunset at 4:47 pm EST.

Sunshine

In Edgemoor, the average sunshine in December is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Edgemoor, Delaware. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 2 in December leads to these guidelines:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

How cold is December in Edgemoor?

During December, Edgemoor experiences an average high-temperature of 44.1°F (6.7°C) and a low-temperature of 33.1°F (0.6°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 91.4°F (33°C).

What is the average humidity in December in Edgemoor?

In Edgemoor, Delaware, the average relative humidity in December is 77%.

How much does it rain in Edgemoor in December?

In Edgemoor, Delaware, in December, during 10.1 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

How many days does it snow in December in Edgemoor?

In Edgemoor, in December, snow falls for 2.9 days, with typically accumulated 0.98" (25mm) of snow.

What is the water temperature in December in Edgemoor?

In Edgemoor, in December, the average water temperature is 47.8°F (8.8°C). Swimming in 47.8°F (8.8°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.

What is the month with the shortest days in Edgemoor?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

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

In Edgemoor, Delaware, the average day length in December is 9h and 25min.

When are sunrise and sunset in December in Edgemoor?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:38 pm. On the last day of the month, in Edgemoor, Delaware, sunrise is at 7:22 am and sunset at 4:47 pm EST.

How many hours of sunshine does Edgemoor have in December?

In Edgemoor, Delaware, the average sunshine duration in December is 5.1h.

When is the lowest UV index in Edgemoor?

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

What is the UV index intensity in December in Edgemoor?

In Edgemoor, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from 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
Edgemoor, DE

Average temperature in December - Edgemoor, DE
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in December
Edgemoor, DE

Average pressure in December - Edgemoor, 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
Edgemoor, DE

Average wind speed in December - Edgemoor, DE
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in December
Edgemoor, DE

Average humidity in December - Edgemoor, DE
  • Average humidity in December: 77%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in December
Edgemoor, DE

Average rainfall in December - Edgemoor, DE
  • Average rainfall in December: 2.64"

The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in December
Edgemoor, DE

Average rainfall days in December - Edgemoor, DE
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in December
Edgemoor, DE

Average snowfall in December - Edgemoor, DE
  • Average snowfall in December: 0.98"

The month with the highest snowfall is March (2.2").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Edgemoor, DE

Average snowfall days in December - Edgemoor, DE
  • Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in December
Edgemoor, DE

Average sea temperature in December - Edgemoor, DE
  • Average sea temperature in December: 47.7°F

The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

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Average daylight in December /
Average sunshine in December
Edgemoor, DE

Average daylight in December / Average sunshine in December - Edgemoor, DE
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in December
Edgemoor, DE

Average sunshine days in December - Edgemoor, DE
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12.2 days).

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Average UV index in December
Edgemoor, DE

Average UV index in December - Edgemoor, 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, February, November and December (UV index 2).

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Average cloud cover in December
Edgemoor, DE

Average cloud cover in December - Edgemoor, DE
  • Average cloud cover in December: 45

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in December
Edgemoor, DE

Average visibility in December - Edgemoor, 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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Edgemoor, Delaware, USA

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