December weather forecast
Cromwell Station, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Cromwell Station, Maryland, with an average temperature varying between 45.5°F (7.5°C) and 34.5°F (1.4°C).

Temperature

Cromwell Station's weather subtly changes with the onset of December, barely falling from a fresh 53.6°F (12°C) in November to a chilly 45.5°F (7.5°C). In Cromwell Station, December nights witness a steady temperature drop to an icy 34.5°F (1.4°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In December, the rain falls for 10.4 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. In Cromwell Station, during the entire year, the rain falls for 157.2 days and collects up to 30.47" (774mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Cromwell Station, in December, during 2.1 snowfall days, 0.39" (10mm) of snow is typically accumulated. In Cromwell Station, during the entire year, snow falls for 11.9 days and aggregates up to 5.75" (146mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:52 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 2 during December leads to these advisories:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Frequently asked questions

What is the temperature in December?

The average high-temperature and low-temperature during December are 45.5°F (7.5°C) and 34.5°F (1.4°C) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is evaluated at 91.4°F (33°C).

What is the average humidity in December?

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

How much does it rain in Cromwell Station in December?

In December, in Cromwell Station, the rain falls for 10.4 days. Throughout December, 2.32" (59mm) of precipitation is accumulated.

How many days does it snow in December?

In Cromwell Station, in December, snow falls for 2.1 days, with typically accumulated 0.39" (10mm) of snow.

What is the month with the shortest days in Cromwell Station?

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

How many hours of daylight does Cromwell Station have in December?

In December, the average day length is 9h and 27min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:52 pm EST.

How many hours of sunshine does Cromwell Station have in December?

In Cromwell Station, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December in Cromwell Station?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Cromwell Station, MD

Average temperature in December - Cromwell Station, MD
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

Average pressure in December
Cromwell Station, MD

Average pressure in December - Cromwell Station, 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 (29.94"Hg).

Average wind speed in December
Cromwell Station, MD

Average wind speed in December - Cromwell Station, MD
  • Average wind speed in December: 8.5mph

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in December
Cromwell Station, MD

Average humidity in December - Cromwell Station, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are March, April and July (72%).

Average rainfall in December
Cromwell Station, MD

Average rainfall in December - Cromwell Station, MD
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.81").

Average rainfall days in December
Cromwell Station, MD

Average rainfall days in December - Cromwell Station, MD
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and November (8.4 days).

Average snowfall in December
Cromwell Station, MD

Average snowfall in December - Cromwell Station, MD
  • Average snowfall in December: 0.39"

The month with the highest snowfall is January (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Cromwell Station, MD

Average snowfall days in December - Cromwell Station, MD
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Cromwell Station, MD

Average daylight in December / Average sunshine in December - Cromwell Station, 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: 5h and 1min

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 6min).

Average sunshine days in December
Cromwell Station, MD

Average sunshine days in December - Cromwell Station, MD
  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is November (19.9 days).
The months with the least sunshine days are May and July (10.8 days).

Average UV index in December
Cromwell Station, MD

Average UV index in December - Cromwell Station, 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, November and December (UV index 2).

Average cloud cover in December
Cromwell Station, MD

Average cloud cover in December - Cromwell Station, 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 29).

Average visibility in December
Cromwell Station, MD

Average visibility in December - Cromwell Station, 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).

Cromwell Station, Maryland, USA

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