December weather forecast
Calvert Woods, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Calvert Woods, Maryland, with an average temperature ranging between max 46.4°F (8°C) and min 36.5°F (2.5°C).

Temperature

December's onset introduces a mild reduction in the average high-temperature, from a cool 54.7°F (12.6°C) in November to a frosty 46.4°F (8°C). Calvert Woods records a steady low-temperature average of 36.5°F (2.5°C) during December.

Humidity

In Calvert Woods, the average relative humidity in December is 75%.

Rainfall

In Calvert Woods, in December, it is raining for 8.4 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 132.3 rainfall days, and 15.83" (402mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Calvert Woods, during December, snow falls for 1.6 days and regularly aggregates up to 0.28" (7mm) of snow. Throughout the year, there are 9.4 snowfall days, and 1.97" (50mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Calvert Woods.
On the first day of December, sunrise is at 7:06 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm EST.

Sunshine

In Calvert Woods, Maryland, the average sunshine in December is 5.2h.

UV index

January 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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

The average high-temperature and low-temperature during December are 46.4°F (8°C) and 36.5°F (2.5°C) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, 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 Calvert Woods, during December, the rain falls for 8.4 days and regularly aggregates up to 0.91" (23mm) of precipitation.

How much does it snow in December?

In Calvert Woods, in December, during 1.6 snowfall days, 0.28" (7mm) of snow is typically accumulated.

What is the month with the shortest days in Calvert Woods?

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

What is the average length of the day in December?

In Calvert Woods, the average day length in December is 9h and 31min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:06 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm EST.

How many hours of sunshine does Calvert Woods have in December?

In Calvert Woods, Maryland, the average sunshine duration in December is 5.2h.

When is the lowest UV index?

January 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 Calvert Woods, 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
Calvert Woods, MD

Average temperature in December - Calvert Woods, MD
  • Average high temperature in December: 46.4°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 (40.6°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in December
Calvert Woods, MD

Average pressure in December - Calvert Woods, 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
Calvert Woods, MD

Average wind speed in December - Calvert Woods, MD
  • Average wind speed in December: 9.2mph

The windiest months (with the highest average wind speed) are January and March (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in December
Calvert Woods, MD

Average humidity in December - Calvert Woods, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (72%).

Average rainfall in December
Calvert Woods, MD

Average rainfall in December - Calvert Woods, MD
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is August (2.4").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in December
Calvert Woods, MD

Average rainfall days in December - Calvert Woods, MD
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (6.6 days).

Average snowfall in December
Calvert Woods, MD

Average snowfall in December - Calvert Woods, MD
  • Average snowfall in December: 0.28"

The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Calvert Woods, MD

Average snowfall days in December - Calvert Woods, MD
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is January (2.9 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
Calvert Woods, MD

Average daylight in December / Average sunshine in December - Calvert Woods, 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 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
Calvert Woods, MD

Average sunshine days in December - Calvert Woods, MD
  • Average sunshine days in December: 19.9 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (13.7 days).

Average UV index in December
Calvert Woods, MD

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

Average cloud cover in December
Calvert Woods, MD

Average cloud cover in December - Calvert Woods, MD
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in December
Calvert Woods, MD

Average visibility in December - Calvert Woods, 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).

Calvert Woods, Maryland, USA

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