December weather forecast
Brightwood Acres, MD

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Weather in December

December, the first month of the winter in Brightwood Acres, is also a wintry month, with an average temperature varying between 29.3°F (-1.5°C) and 41.5°F (5.3°C).

Temperature

The arrival of December corresponds with a temperature reduction, down from November's fresh 50.7°F (10.4°C) to an icy 41.5°F (5.3°C). During the month of December, Brightwood Acres's nighttime temperature lowers to an average of 29.3°F (-1.5°C).

Humidity

In Brightwood Acres, the average relative humidity in December is 78%.

Rainfall

In December, the rain falls for 11.2 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. In Brightwood Acres, during the entire year, the rain falls for 164.7 days and collects up to 29.17" (741mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Brightwood Acres, Maryland, in December, during 5.2 snowfall days, 2.17" (55mm) of snow is typically accumulated. Throughout the year, in Brightwood Acres, there are 28.6 snowfall days, and 14.65" (372mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:56 pm EST.

Sunshine

In Brightwood Acres, the average sunshine in December 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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

In Brightwood Acres, in December, the average high-temperature is 41.5°F (5.3°C), and the average low-temperature is 29.3°F (-1.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in December?

In Brightwood Acres, the average relative humidity in December is 78%.

How much does it rain in Brightwood Acres in December?

In Brightwood Acres, in December, during 11.2 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

How much does it snow in December?

In Brightwood Acres, during December, snow falls for 5.2 days and regularly aggregates up to 2.17" (55mm) 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.

What is the average length of the day in December?

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

When are sunrise and sunset in December?

On the first day of December in Brightwood Acres, Maryland, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:56 pm EST.

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

In Brightwood 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 reading in December?

In Brightwood Acres, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Brightwood Acres, MD

Average temperature in December - Brightwood Acres, MD
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in December
Brightwood Acres, MD

Average pressure in December - Brightwood 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
Brightwood Acres, MD

Average wind speed in December - Brightwood Acres, MD
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in December
Brightwood Acres, MD

Average humidity in December - Brightwood Acres, MD
  • Average humidity in December: 78%

The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in December
Brightwood Acres, MD

Average rainfall in December - Brightwood Acres, MD
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.97").

Average rainfall days in December
Brightwood Acres, MD

Average rainfall days in December - Brightwood Acres, MD
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in December
Brightwood Acres, MD

Average snowfall in December - Brightwood Acres, MD
  • Average snowfall in December: 2.17"

The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Brightwood Acres, MD

Average snowfall days in December - Brightwood Acres, MD
  • Average snowfall days in December: 5.2 days

The month with the highest number of snowfall days is January (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
Brightwood Acres, MD

Average daylight in December / Average sunshine in December - Brightwood 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
Brightwood Acres, MD

Average sunshine days in December - Brightwood Acres, MD
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.7 days).

Average UV index in December
Brightwood Acres, MD

Average UV index in December - Brightwood Acres, MD
  • Average UV index in December: 2

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Brightwood Acres, MD

Average cloud cover in December - Brightwood Acres, MD
  • Average cloud cover in December: 49

The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Brightwood Acres, MD

Average visibility in December - Brightwood Acres, MD
  • Average visibility in December: 6mi

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

Brightwood Acres, Maryland, USA

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