December weather forecast
Smithbrook Acres, MD

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Weather in December

December, the first month of the winter in Smithbrook Acres, is also a wintry month, with an average temperature fluctuating between 42.1°F (5.6°C) and 30.2°F (-1°C).

Temperature

As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a fresh 50.9°F (10.5°C) to a wintry 42.1°F (5.6°C). The average low-temperature of 30.2°F (-1°C) is witnessed during December.

Humidity

In Smithbrook Acres, the average relative humidity in December is 79%.

Rainfall

In Smithbrook Acres, during December, the rain falls for 10.8 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 164.1 rainfall days, and 31.97" (812mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Smithbrook Acres, in December, during 4.8 snowfall days, 2.13" (54mm) of snow is typically accumulated. In Smithbrook Acres, during the entire year, snow falls for 26.7 days and aggregates up to 14.13" (359mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:55 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

The months with the lowest UV index in Smithbrook Acres are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold is it in December?

The average high-temperature, in December, in Smithbrook Acres, is 42.1°F (5.6°C), while the average low-temperature is 30.2°F (-1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August 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 Smithbrook Acres, Maryland, during December, the rain falls for 10.8 days and regularly aggregates up to 2.4" (61mm) of precipitation.

How much does it snow in December?

In Smithbrook Acres, in December, during 4.8 snowfall days, 2.13" (54mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Smithbrook Acres have in December?

The average day length in December is 9h and 25min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:11 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:55 pm EST.

How long on average sun shines in December?

In Smithbrook Acres, the average sunshine duration in December is 4.9h.

What are the months with the lowest UV index?

The months with the lowest UV index 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 is 2. A UV Index value of 2, and less, symbolizes 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
Smithbrook Acres, MD

Average temperature in December - Smithbrook Acres, MD
  • Average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in December
Smithbrook Acres, MD

Average pressure in December - Smithbrook Acres, 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
Smithbrook Acres, MD

Average wind speed in December - Smithbrook Acres, MD
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in December
Smithbrook Acres, MD

Average humidity in December - Smithbrook Acres, MD
  • Average humidity in December: 79%

The month with the highest relative humidity is October (80%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in December
Smithbrook Acres, MD

Average rainfall in December - Smithbrook Acres, MD
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (2.2").

Average rainfall days in December
Smithbrook Acres, MD

Average rainfall days in December - Smithbrook Acres, MD
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in December
Smithbrook Acres, MD

Average snowfall in December - Smithbrook Acres, MD
  • Average snowfall in December: 2.13"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Smithbrook Acres, MD

Average snowfall days in December - Smithbrook Acres, MD
  • Average snowfall days in December: 4.8 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Smithbrook Acres, MD

Average daylight in December / Average sunshine in December - Smithbrook Acres, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Smithbrook Acres, MD

Average sunshine days in December - Smithbrook Acres, MD
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in December
Smithbrook Acres, MD

Average UV index in December - Smithbrook Acres, 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
Smithbrook Acres, MD

Average cloud cover in December - Smithbrook Acres, MD
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Smithbrook Acres, MD

Average visibility in December - Smithbrook Acres, MD
  • Average visibility in December: 5mi

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

Smithbrook Acres, Maryland, USA

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