December weather forecast
Ellerslie, MD

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Weather in December

The first month of the winter, December, is also a wintry month in Ellerslie, Maryland, with an average temperature varying between 27.9°F (-2.3°C) and 40.1°F (4.5°C).

Temperature

Ellerslie's December weather comes with a decrease in average high-temperatures, moving from a frosty 49.1°F (9.5°C) in November to a cold 40.1°F (4.5°C). Ellerslie encounters a steady low-temperature average of 27.9°F (-2.3°C) throughout the month of December.

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Ellerslie, during December, the rain falls for 13.7 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Ellerslie, during the entire year, the rain falls for 168 days and collects up to 23.15" (588mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Ellerslie, in December, snow falls for 7 days, with typically accumulated 1.81" (46mm) of snow. In Ellerslie, during the entire year, snow falls for 36.4 days and aggregates up to 13.19" (335mm) of snow.

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 7:17 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:35 am and sunset at 5:00 pm EST.

Sunshine

The average sunshine in December is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.

Frequently asked questions

How cold is it in December?

Ellerslie in December has an average high-temperature of 40.1°F (4.5°C) and an average low-temperature of 27.9°F (-2.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is estimated at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 80%.

How much does it rain in December?

In Ellerslie, in December, it is raining for 13.7 days, with typically 1.93" (49mm) of accumulated precipitation.

How much does it snow in December?

In Ellerslie, during December, snow falls for 7 days and regularly aggregates up to 1.81" (46mm) of snow.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

How many hours of daylight does Ellerslie have in December?

In December, the average day length is 9h and 25min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:00 pm EST.

How many hours of sunshine does Ellerslie have in December?

In December, the average sunshine duration is 4.9h.

What are the months with the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December?

In December, the average daily maximum UV index in Ellerslie is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's 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
Ellerslie, MD

Average temperature in December - Ellerslie, MD
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in December
Ellerslie, MD

Average pressure in December - Ellerslie, 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
Ellerslie, MD

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

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Ellerslie, MD

Average humidity in December - Ellerslie, MD
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in December
Ellerslie, MD

Average rainfall in December - Ellerslie, MD
  • Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (1.46").

Average rainfall days in December
Ellerslie, MD

Average rainfall days in December - Ellerslie, MD
  • Average rainfall days in December: 13.7 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.9 days).

Average snowfall in December
Ellerslie, MD

Average snowfall in December - Ellerslie, MD
  • Average snowfall in December: 1.81"

The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Ellerslie, MD

Average snowfall days in December - Ellerslie, MD
  • Average snowfall days in December: 7 days

The month with the highest number of snowfall days is January (11.3 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
Ellerslie, MD

Average daylight in December / Average sunshine in December - Ellerslie, 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 January (Average sunshine: 4h and 42min).

Average sunshine days in December
Ellerslie, MD

Average sunshine days in December - Ellerslie, MD
  • Average sunshine days in December: 13.8 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in December
Ellerslie, MD

Average UV index in December - Ellerslie, MD
  • Average UV index in December: 2

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

Average cloud cover in December
Ellerslie, MD

Average cloud cover in December - Ellerslie, MD
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Ellerslie, MD

Average visibility in December - Ellerslie, MD
  • Average visibility in December: 5mi

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

Ellerslie, Maryland, USA

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