December weather forecast
Germantown Park, MD

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Weather in December

The first month of the winter, December, is also a frosty month in Germantown Park, Maryland, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 31.8°F (-0.1°C).

Temperature

December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's fresh 53.1°F (11.7°C) to a frosty 44.2°F (6.8°C). Throughout December, Germantown Park's nights cool down to an average of 31.8°F (-0.1°C).

Humidity

October and December, with an average relative humidity of 78%, are the most humid months.

Rainfall

In Germantown Park, in December, it is raining for 10.5 days, with typically 2.36" (60mm) of accumulated precipitation. In Germantown Park, during the entire year, the rain falls for 159.4 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In December, it is snowing for 3 days. Throughout December, 1.57" (40mm) of snow is accumulated. Throughout the year, there are 19.1 snowfall days, and 10.04" (255mm) 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 the month, sunrise is at 7:09 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:56 pm EST.

Sunshine

The average sunshine in December 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 low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a regular UV index of 2 translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.

Frequently asked questions

Is December cold?

In Germantown Park, 44.2°F (6.8°C) is the average high-temperature and 31.8°F (-0.1°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 93.2°F (34°C).

What is the most humid month?

October and December, with an average relative humidity of 78%, are most humid months.

What is the average humidity in December?

The average relative humidity in December is 78%.

How much does it rain in Germantown Park in December?

In Germantown Park, in December, during 10.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, in Germantown Park, it is snowing for 3 days. Throughout December, 1.57" (40mm) of snow is accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Germantown Park have in December?

The average day length in December is 9h and 28min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:56 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 5.2h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Germantown Park, MD

Average temperature in December - Germantown Park, MD
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 31.8°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in December
Germantown Park, MD

Average pressure in December - Germantown Park, 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 (29.95"Hg).

Average wind speed in December
Germantown Park, MD

Average wind speed in December - Germantown Park, MD
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in December
Germantown Park, MD

Average humidity in December - Germantown Park, MD
  • Average humidity in December: 78%

The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (72%).

Average rainfall in December
Germantown Park, MD

Average rainfall in December - Germantown Park, MD
  • Average rainfall in December: 2.36"

The wettest month (with the highest rainfall) is August (3.78").
The driest months (with the least rainfall) are January and February (1.97").

Average rainfall days in December
Germantown Park, MD

Average rainfall days in December - Germantown Park, MD
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (17.5 days).
The months with the least rainy days are January and November (9.5 days).

Average snowfall in December
Germantown Park, MD

Average snowfall in December - Germantown Park, MD
  • Average snowfall in December: 1.57"

The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Germantown Park, MD

Average snowfall days in December - Germantown Park, MD
  • Average snowfall days in December: 3 days

The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Germantown Park, MD

Average daylight in December / Average sunshine in December - Germantown Park, 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 January (Average sunshine: 5h and 0min).

Average sunshine days in December
Germantown Park, MD

Average sunshine days in December - Germantown Park, MD
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in December
Germantown Park, MD

Average UV index in December - Germantown Park, 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).

Average cloud cover in December
Germantown Park, MD

Average cloud cover in December - Germantown Park, 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 30).

Average visibility in December
Germantown Park, MD

Average visibility in December - Germantown Park, MD
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Germantown Park, Maryland, USA

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