December weather forecast
Longwoods, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Longwoods, Maryland, with an average temperature ranging between min 36.1°F (2.3°C) and max 46.8°F (8.2°C).

Temperature

The onset of December brings a small shift in high-temperatures, falling from a fresh 54.5°F (12.5°C) in November to a frosty 46.8°F (8.2°C). An average low-temperature of 36.1°F (2.3°C) is common during the nights of December.

Humidity

In Longwoods, the average relative humidity in December is 76%.

Rainfall

In December, in Longwoods, the rain falls for 8.6 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. In Longwoods, during the entire year, the rain falls for 130 days and collects up to 15.04" (382mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Longwoods, in December, snow falls for 1.5 days, with typically accumulated 0.43" (11mm) of snow. Throughout the year, there are 9.4 snowfall days, and 1.85" (47mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:04 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:52 pm EST.

Sunshine

In Longwoods, the average sunshine in December is 5.3h.

UV index

The months with the lowest UV index are January, February 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 typical high UV index of 2 in December suggests the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

In December, the average high-temperature and low-temperature are 46.8°F (8.2°C) and 36.1°F (2.3°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is calculated to be 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How much does it rain in December?

In Longwoods, in December, during 8.6 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

How much does it snow in December?

In Longwoods, in December, during 1.5 snowfall days, 0.43" (11mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

How many hours of daylight does Longwoods have in December?

In December, the average day length is 9h and 30min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:04 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:52 pm EST.

How long on average sun shines in December?

In Longwoods, the average sunshine duration in December is 5.3h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In Longwoods, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Longwoods, MD

Average temperature in December - Longwoods, MD
  • Average high temperature in December: 46.8°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in December: 36.1°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in December
Longwoods, MD

Average pressure in December - Longwoods, MD
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Longwoods, MD

Average wind speed in December - Longwoods, MD
  • Average wind speed in December: 8.9mph

The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in December
Longwoods, MD

Average humidity in December - Longwoods, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (73%).

Average rainfall in December
Longwoods, MD

Average rainfall in December - Longwoods, MD
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in December
Longwoods, MD

Average rainfall days in December - Longwoods, MD
  • Average rainfall days in December: 8.6 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (7.4 days).

Average snowfall in December
Longwoods, MD

Average snowfall in December - Longwoods, MD
  • Average snowfall in December: 0.43"

The month with the highest snowfall is January (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Longwoods, MD

Average snowfall days in December - Longwoods, MD
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Longwoods, MD

Average daylight in December / Average sunshine in December - Longwoods, MD
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days in December
Longwoods, MD

Average sunshine days in December - Longwoods, MD
  • Average sunshine days in December: 20.1 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (13 days).

Average UV index in December
Longwoods, MD

Average UV index in December - Longwoods, 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 and December (UV index 2).

Average cloud cover in December
Longwoods, MD

Average cloud cover in December - Longwoods, MD
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in December
Longwoods, MD

Average visibility in December - Longwoods, MD
  • Average visibility in December: 6mi

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

Longwoods, Maryland, USA

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