December weather forecast
Montgomery Manor, MD

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Weather in December

December, the first month of the winter in Montgomery Manor, is also a frosty month, with an average temperature ranging between max 45.5°F (7.5°C) and min 34.2°F (1.2°C).

Temperature

December's onset brings a negligible change in high-temperatures, falling from a cool 53.4°F (11.9°C) in November to a chilly 45.5°F (7.5°C). Nighttime temperatures in December average to a wintry 34.2°F (1.2°C).

Humidity

In Montgomery Manor, the average relative humidity in December is 76%.

Rainfall

In December, in Montgomery Manor, the rain falls for 10.1 days. Throughout December, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Montgomery Manor, there are 156.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Montgomery Manor, Maryland, during December, snow falls for 2.2 days and regularly aggregates up to 0.79" (20mm) of snow. Throughout the year, in Montgomery Manor, there are 12.8 snowfall days, and 6.77" (172mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm EST.

Sunshine

In Montgomery Manor, the average sunshine in December is 5.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Montgomery Manor. 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: The daily high UV index of 2 in December translates into this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

What are the temperatures in Montgomery Manor in December?

December temperatures vary between a high-temperature of 45.5°F (7.5°C) and a low-temperature of 34.2°F (1.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is computed to be 91.4°F (33°C).

What is the average humidity in December in Montgomery Manor?

In Montgomery Manor, Maryland, the average relative humidity in December is 76%.

How much does it rain in Montgomery Manor in December?

In Montgomery Manor, in December, during 10.1 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

How many days does it snow in December in Montgomery Manor?

In Montgomery Manor, Maryland, in December, during 2.2 snowfall days, 0.79" (20mm) of snow is typically accumulated.

What is the month with the shortest days in Montgomery Manor?

December has the shortest days of the year in Montgomery Manor, Maryland, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Montgomery Manor?

In December, the average day length in Montgomery Manor is 9h and 28min.

What time are sunrise and sunset in December in Montgomery Manor?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of the month, in Montgomery Manor, Maryland, sunrise is at 7:26 am and sunset at 4:54 pm EST.

How long on average sun shines in December in Montgomery Manor?

In December, the average sunshine duration in Montgomery Manor is 5.2h.

When is the lowest UV index in Montgomery Manor?

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

How high is the UV index in December in Montgomery Manor?

In Montgomery Manor, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Montgomery Manor, MD

Average temperature in December - Montgomery Manor, 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 (38.8°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

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Average pressure in December
Montgomery Manor, MD

Average pressure in December - Montgomery Manor, 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
Montgomery Manor, MD

Average wind speed in December - Montgomery Manor, MD
  • Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in December
Montgomery Manor, MD

Average humidity in December - Montgomery Manor, MD
  • Average humidity in December: 76%

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

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Average rainfall in December
Montgomery Manor, MD

Average rainfall in December - Montgomery Manor, MD
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

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Average rainfall days in December
Montgomery Manor, MD

Average rainfall days in December - Montgomery Manor, MD
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in December
Montgomery Manor, MD

Average snowfall in December - Montgomery Manor, MD
  • Average snowfall in December: 0.79"

The month with the highest snowfall is January (2.24").
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
Montgomery Manor, MD

Average snowfall days in December - Montgomery Manor, MD
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Montgomery Manor, MD

Average daylight in December / Average sunshine in December - Montgomery Manor, 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
Montgomery Manor, MD

Average sunshine days in December - Montgomery Manor, MD
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

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Average UV index in December
Montgomery Manor, MD

Average UV index in December - Montgomery Manor, 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
Montgomery Manor, MD

Average cloud cover in December - Montgomery Manor, MD
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in December
Montgomery Manor, MD

Average visibility in December - Montgomery Manor, 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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Montgomery Manor, Maryland, USA

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