December weather forecast
Boyds, MD

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Weather in December

December, the first month of the winter in Boyds, is still a chilly month, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 31.8°F (-0.1°C).

Temperature

December's onset introduces a mild reduction in the average high-temperature, from a cool 53.1°F (11.7°C) in November to a frosty 44.2°F (6.8°C). In December, Boyds experiences an average nighttime temperature of 31.8°F (-0.1°C).

Humidity

October and December, with an average relative humidity of 78%, are the most humid months in Boyds, Maryland.

Rainfall

In Boyds, in December, it is raining for 10.5 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 159.4 rainfall days, and 30.71" (780mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Boyds are January through May, November and December. In Boyds, during December, snow falls for 3 days and regularly aggregates up to 1.57" (40mm) of snow. In Boyds, during the entire year, snow falls for 19.1 days and aggregates up to 10.04" (255mm) of snow.

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 7:10 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:56 pm EST.

Sunshine

In Boyds, the average sunshine in December is 5.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

December temperatures vary between a high-temperature of 44.2°F (6.8°C) and a low-temperature of 31.8°F (-0.1°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 93.2°F (34°C).

What are the most humid months?

The months with the highest humidity are October and December, with an average relative humidity of 78%.

What is the average humidity in December in Boyds?

In Boyds, the average relative humidity in December is 78%.

How much does it rain in December?

In Boyds, during December, the rain falls for 10.5 days and regularly aggregates up to 2.36" (60mm) of precipitation.

How much does it snow in December?

In Boyds, in December, during 3 snowfall days, 1.57" (40mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Boyds?

The average day length in December is 9h and 28min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:10 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:56 pm EST.

How long on average sun shines in December?

The average sunshine duration in December in Boyds is 5.2h.

When is the lowest UV index?

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

How high is the UV index in December?

In Boyds, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Boyds, MD

Average temperature in December - Boyds, MD
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 31.8°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in December
Boyds, MD

Average pressure in December - Boyds, 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
Boyds, MD

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

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in December
Boyds, MD

Average humidity in December - Boyds, MD
  • Average humidity in December: 78%

The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (72%).

Average rainfall in December
Boyds, MD

Average rainfall in December - Boyds, MD
  • Average rainfall in December: 2.36"

The wettest month (with the highest rainfall) is August (3.78").
The driest months (with the least rainfall) are January and February (1.97").

Average rainfall days in December
Boyds, MD

Average rainfall days in December - Boyds, MD
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (17.5 days).
The months with the least rainy days are January and November (9.5 days).

Average snowfall in December
Boyds, MD

Average snowfall in December - Boyds, MD
  • Average snowfall in December: 1.57"

The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Boyds, MD

Average snowfall days in December - Boyds, MD
  • Average snowfall days in December: 3 days

The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Boyds, 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 54min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

Average sunshine days in December
Boyds, MD

Average sunshine days in December - Boyds, MD
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in December
Boyds, MD

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

Average cloud cover in December
Boyds, MD

Average cloud cover in December - Boyds, MD
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Boyds, MD

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

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

Boyds, Maryland, USA

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