December weather forecast
Briar Cliff on the Severn, MD

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Weather in December

December, the first month of the winter in Briar Cliff on the Severn, is still a chilly month, with an average temperature ranging between min 34.7°F (1.5°C) and max 45.5°F (7.5°C).

Temperature

Briar Cliff on the Severn's weather subtly changes with the onset of December, barely falling from a cool 53.8°F (12.1°C) in November to a chilly 45.5°F (7.5°C). In the month of December, Briar Cliff on the Severn witnesses a consistent average low-temperature of 34.7°F (1.5°C).

Humidity

In Briar Cliff on the Severn, the average relative humidity in December is 75%.

Rainfall

In Briar Cliff on the Severn, in December, during 11.4 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. In Briar Cliff on the Severn, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.

Snowfall

Months with snowfall in Briar Cliff on the Severn are January through April, November and December. In Briar Cliff on the Severn, in December, snow falls for 2.4 days, with typically accumulated 0.63" (16mm) of snow. In Briar Cliff on the Severn, during the entire year, snow falls for 14 days and aggregates up to 6.14" (156mm) of snow.

Daylight

December has the shortest days of the year in Briar Cliff on the Severn, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:53 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index in Briar Cliff on the Severn are January, 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 average individuals.
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. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the temperature in December in Briar Cliff on the Severn?

In Briar Cliff on the Severn, in December, the average high-temperature is 45.5°F (7.5°C), and the average low-temperature is 34.7°F (1.5°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 91.4°F (33°C).

What is the average humidity in December in Briar Cliff on the Severn?

The average relative humidity in December in Briar Cliff on the Severn, Maryland, is 75%.

How much does it rain in Briar Cliff on the Severn in December?

In Briar Cliff on the Severn, in December, it is raining for 11.4 days, with typically 2.83" (72mm) of accumulated precipitation.

How much does it snow in Briar Cliff on the Severn in December?

In December, it is snowing for 2.4 days. Throughout December, 0.63" (16mm) of snow is accumulated.

What is the month with the shortest days in Briar Cliff on the Severn?

December has the shortest days of the year in Briar Cliff on the Severn, Maryland, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Briar Cliff on the Severn?

In Briar Cliff on the Severn, the average day length in December is 9h and 29min.

When is the sunrise / sunset in December in Briar Cliff on the Severn?

On the first day of December in Briar Cliff on the Severn, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:53 pm EST.

How long on average sun shines in December in Briar Cliff on the Severn?

In Briar Cliff on the Severn, Maryland, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index in Briar Cliff on the Severn?

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Briar Cliff on the Severn, Maryland.

What is the UV index intensity in December in Briar Cliff on the Severn?

In Briar Cliff on the Severn, 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 the Sun's 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
Briar Cliff on the Severn, MD

Average temperature in December - Briar Cliff on the Severn, MD
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in December
Briar Cliff on the Severn, MD

Average pressure in December - Briar Cliff on the Severn, 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
Briar Cliff on the Severn, MD

Average wind speed in December - Briar Cliff on the Severn, MD
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in December
Briar Cliff on the Severn, MD

Average humidity in December - Briar Cliff on the Severn, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

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Average rainfall in December
Briar Cliff on the Severn, MD

Average rainfall in December - Briar Cliff on the Severn, MD
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in December
Briar Cliff on the Severn, MD

Average rainfall days in December - Briar Cliff on the Severn, MD
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in December
Briar Cliff on the Severn, MD

Average snowfall in December - Briar Cliff on the Severn, MD
  • Average snowfall in December: 0.63"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Briar Cliff on the Severn, MD

Average snowfall days in December - Briar Cliff on the Severn, MD
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is January (4.4 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
Briar Cliff on the Severn, MD

Average daylight in December / Average sunshine in December - Briar Cliff on the Severn, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in December
Briar Cliff on the Severn, MD

Average sunshine days in December - Briar Cliff on the Severn, MD
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in December
Briar Cliff on the Severn, MD

Average UV index in December - Briar Cliff on the Severn, 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, November and December (UV index 2).

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Average cloud cover in December
Briar Cliff on the Severn, MD

Average cloud cover in December - Briar Cliff on the Severn, MD
  • Average cloud cover in December: 44

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Briar Cliff on the Severn, MD

Average visibility in December - Briar Cliff on the Severn, 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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Briar Cliff on the Severn, Maryland, USA

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