December weather forecast
Selby Beach, MD

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Weather in December

December, the first month of the winter in Selby Beach, is still a chilly month, with an average temperature varying between 36.5°F (2.5°C) and 46°F (7.8°C).

Temperature

With the onset of December, the average high-temperature subtly recedes from November's cool 54.5°F (12.5°C) to a chilly 46°F (7.8°C). The low-temperature averages to an icy 36.5°F (2.5°C) during the nights of December.

Humidity

In Selby Beach, the average relative humidity in December is 75%.

Rainfall

In Selby Beach, in December, it is raining for 7.4 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 120.4 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Selby Beach, in December, during 1.5 snowfall days, 0.12" (3mm) of snow is typically accumulated. Throughout the year, there are 8.3 snowfall days, and 1.22" (31mm) 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 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December is 5.2h.

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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

In Selby Beach, in December, the average high-temperature is 46°F (7.8°C), and the average low-temperature is 36.5°F (2.5°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 75%.

How many days does it rain in December?

In December, the rain falls for 7.4 days. Throughout December, 0.67" (17mm) of precipitation is accumulated.

How much does it snow in December?

In December, it is snowing for 1.5 days. Throughout December, 0.12" (3mm) of snow is accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Selby Beach have in December?

In Selby Beach, Maryland, the average day length in December is 9h and 29min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 5.2h.

When is the lowest UV index?

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

How high is the UV index in December?

In Selby Beach, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Selby Beach, MD

Average temperature in December - Selby Beach, MD
  • Average high temperature in December: 46°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 (40.3°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

Average pressure in December
Selby Beach, MD

Average pressure in December - Selby Beach, 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
Selby Beach, MD

Average wind speed in December - Selby Beach, MD
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in December
Selby Beach, MD

Average humidity in December - Selby Beach, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

Average rainfall in December
Selby Beach, MD

Average rainfall in December - Selby Beach, MD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in December
Selby Beach, MD

Average rainfall days in December - Selby Beach, MD
  • Average rainfall days in December: 7.4 days

The months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

Average snowfall in December
Selby Beach, MD

Average snowfall in December - Selby Beach, MD
  • Average snowfall in December: 0.12"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Selby Beach, MD

Average snowfall days in December - Selby Beach, MD
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (2.5 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
Selby Beach, MD

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

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 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in December
Selby Beach, MD

Average sunshine days in December - Selby Beach, MD
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

Average UV index in December
Selby Beach, MD

Average UV index in December - Selby Beach, 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
Selby Beach, MD

Average cloud cover in December - Selby Beach, MD
  • Average cloud cover in December: 44

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

Average visibility in December
Selby Beach, MD

Average visibility in December - Selby Beach, 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).

Selby Beach, Maryland, USA

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