December weather forecast
The Heritage, MD

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Weather in December

The first month of the winter, December, is still a chilly month in The Heritage, Maryland, with an average temperature fluctuating between 32.9°F (0.5°C) and 44.2°F (6.8°C).

Temperature

December implies a soft temperature shift, with average high-temperatures reducing from November's fresh 53.1°F (11.7°C) to a chilly 44.2°F (6.8°C). The Heritage encounters a steady low-temperature average of 32.9°F (0.5°C) throughout the month of December.

Humidity

In The Heritage, Maryland, the average relative humidity in December is 76%.

Rainfall

In December, in The Heritage, the rain falls for 10.2 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 159.3 rainfall days, and 30.31" (770mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in The Heritage. In The Heritage, during December, snow falls for 2.9 days and regularly aggregates up to 1.14" (29mm) of snow. In The Heritage, during the entire year, snow falls for 15.9 days and aggregates up to 8.7" (221mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:55 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 2 in December translates into this advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

How cold does it get in The Heritage in December?

In December, in The Heritage, the average high-temperature is 44.2°F (6.8°C), and the average low-temperature is 32.9°F (0.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 91.4°F (33°C).

What is the average humidity in December in The Heritage?

In The Heritage, the average relative humidity in December is 76%.

How much does it rain in The Heritage in December?

In The Heritage, in December, it is raining for 10.2 days, with typically 2.24" (57mm) of accumulated precipitation.

How much does it snow in The Heritage in December?

In The Heritage, during December, snow falls for 2.9 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days in The Heritage?

December has the shortest days of the year in The Heritage, with an average of 9h and 30min of daylight.

What is the average length of the day in December in The Heritage?

In The Heritage, the average day length in December is 9h and 28min.

When is the sunrise / sunset in December in The Heritage?

On the first day of December in The Heritage, Maryland, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:55 pm EST.

How many hours of sunshine does The Heritage have in December?

The average sunshine duration in December in The Heritage is 5.2h.

When is the lowest UV index in The Heritage?

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

What is the UV index reading in December in The Heritage?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to 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
The Heritage, MD

Average temperature in December - The Heritage, MD
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in December
The Heritage, MD

Average pressure in December - The Heritage, MD
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
The Heritage, MD

Average wind speed in December - The Heritage, MD
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
The Heritage, MD

Average humidity in December - The Heritage, MD
  • Average humidity in December: 76%

The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).

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Average rainfall in December
The Heritage, MD

Average rainfall in December - The Heritage, MD
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in December
The Heritage, MD

Average rainfall days in December - The Heritage, MD
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in December
The Heritage, MD

Average snowfall in December - The Heritage, MD
  • Average snowfall in December: 1.14"

The month with the highest snowfall is March (3.03").
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
The Heritage, MD

Average snowfall days in December - The Heritage, MD
  • Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
The Heritage, MD

Average daylight in December / Average sunshine in December - The Heritage, MD
  • Average daylight in December: 9h and 3min

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 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

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Average sunshine days in December
The Heritage, MD

Average sunshine days in December - The Heritage, MD
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
The Heritage, MD

Average UV index in December - The Heritage, MD
  • 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
The Heritage, MD

Average cloud cover in December - The Heritage, MD
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in December
The Heritage, MD

Average visibility in December - The Heritage, MD
  • 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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The Heritage, Maryland, USA

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