December weather forecast
Ben-Har Heights, MD

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Weather in December

December, the first month of the winter in Ben-Har Heights, is still a chilly month, with an average temperature varying between 30.4°F (-0.9°C) and 42.8°F (6°C).

Temperature

The start of December signals a gentle decrease in the average high-temperature, transitioning from a cool 51.3°F (10.7°C) in November to a frosty 42.8°F (6°C). Throughout December, an average nighttime temperature of 30.4°F (-0.9°C) is experienced.

Humidity

In Ben-Har Heights, the average relative humidity in December is 79%.

Rainfall

In Ben-Har Heights, in December, during 11 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Ben-Har Heights, during the entire year, the rain falls for 158.9 days and collects up to 32.68" (830mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Ben-Har Heights, during December, snow falls for 3.9 days and regularly aggregates up to 1.93" (49mm) of snow. In Ben-Har Heights, during the entire year, snow falls for 23.9 days and aggregates up to 13.31" (338mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:09 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:53 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.

Frequently asked questions

How cold is it in December?

The average high-temperature, in December, in Ben-Har Heights, is 42.8°F (6°C), while the average low-temperature is 30.4°F (-0.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 79%.

How many days does it rain in December?

In Ben-Har Heights, in December, it is raining for 11 days, with typically 2.4" (61mm) of accumulated precipitation.

How many days does it snow in December in Ben-Har Heights?

In Ben-Har Heights, in December, snow falls for 3.9 days, with typically accumulated 1.93" (49mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Ben-Har Heights have in December?

The average day length in December is 9h and 26min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:53 pm EST.

How long on average sun shines in December in Ben-Har Heights?

In Ben-Har Heights, the average sunshine duration in December is 4.9h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index in Ben-Har Heights is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Ben-Har Heights, MD

Average temperature in December - Ben-Har Heights, MD
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in December: 30.4°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in December
Ben-Har Heights, MD

Average pressure in December - Ben-Har Heights, 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).

Average wind speed in December
Ben-Har Heights, MD

Average wind speed in December - Ben-Har Heights, MD
  • Average wind speed in December: 8.1mph

The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Ben-Har Heights, MD

Average humidity in December - Ben-Har Heights, MD
  • Average humidity in December: 79%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, April, July and November (76%).

Average rainfall in December
Ben-Har Heights, MD

Average rainfall in December - Ben-Har Heights, MD
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").

Average rainfall days in December
Ben-Har Heights, MD

Average rainfall days in December - Ben-Har Heights, MD
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in December
Ben-Har Heights, MD

Average snowfall in December - Ben-Har Heights, MD
  • Average snowfall in December: 1.93"

The month with the highest snowfall is March (4.06").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Ben-Har Heights, MD

Average snowfall days in December - Ben-Har Heights, MD
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Ben-Har Heights, MD

Average daylight in December / Average sunshine in December - Ben-Har Heights, MD
  • 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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in December
Ben-Har Heights, MD

Average sunshine days in December - Ben-Har Heights, MD
  • Average sunshine days in December: 17.1 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (11.6 days).

Average UV index in December
Ben-Har Heights, MD

Average UV index in December - Ben-Har Heights, 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
Ben-Har Heights, MD

Average cloud cover in December - Ben-Har Heights, MD
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Ben-Har Heights, MD

Average visibility in December - Ben-Har Heights, MD
  • Average visibility in December: 6mi

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

Ben-Har Heights, Maryland, USA

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