December weather forecast
Smithbrook Acres, MD

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Weather in December

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

Temperature

The arrival of December correlates with a minor temperature reduction, down from November's fresh 50.9°F (10.5°C) to an icy 42.1°F (5.6°C). During December, Smithbrook Acres experiences an average low-temperature of 30.2°F (-1°C) at night.

Humidity

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

Rainfall

In Smithbrook Acres, Maryland, in December, it is raining for 10.8 days, with typically 2.4" (61mm) of accumulated precipitation. In Smithbrook Acres, Maryland, during the entire year, the rain falls for 164.1 days and collects up to 31.97" (812mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Smithbrook Acres. In December, it is snowing for 4.8 days. Throughout December, 2.13" (54mm) of snow is accumulated. Throughout the year, there are 26.7 snowfall days, and 14.13" (359mm) of snow is accumulated.

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 7:11 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.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Smithbrook Acres. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. When the Sun is at its strongest around midday, find shade and limit exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is December in Smithbrook Acres?

In Smithbrook Acres, in December, the average high-temperature is 42.1°F (5.6°C), and the average low-temperature is 30.2°F (-1°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December in Smithbrook Acres?

The average relative humidity in December in Smithbrook Acres, Maryland, is 79%.

How much does it rain in Smithbrook Acres in December?

In Smithbrook Acres, during December, the rain falls for 10.8 days and regularly aggregates up to 2.4" (61mm) of precipitation.

How many days does it snow in December in Smithbrook Acres?

In Smithbrook Acres, Maryland, during December, snow falls for 4.8 days and regularly aggregates up to 2.13" (54mm) of snow.

What is the month with the shortest days in Smithbrook Acres?

December has the shortest days of the year in Smithbrook Acres, Maryland, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Smithbrook Acres?

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

When is the sunrise / sunset in December in Smithbrook Acres?

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

How long on average sun shines in December in Smithbrook Acres?

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

What are the months with the lowest UV index in Smithbrook Acres?

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

How high is the UV index in December in Smithbrook Acres?

In Smithbrook Acres, Maryland, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe 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
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Smithbrook Acres, Maryland, USA

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