December weather forecast
Boyds, MD

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Weather in December

December, the first month of the winter in Boyds, is also a frosty month, with an average temperature fluctuating between 31.8°F (-0.1°C) and 44.2°F (6.8°C).

Temperature

The move into December indicates a slight reduction in the average high-temperature, down from November's cool 53.1°F (11.7°C) to a chilly 44.2°F (6.8°C). December's average low-temperature reading settles at a freezing cold 31.8°F (-0.1°C).

Humidity

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

Rainfall

In Boyds, Maryland, in December, during 10.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Boyds, during the entire year, the rain falls for 159.4 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

Months with snowfall in Boyds are January through May, November and December. In Boyds, in December, snow falls for 3 days, with typically accumulated 1.57" (40mm) of snow. Throughout the year, there are 19.1 snowfall days, and 10.04" (255mm) 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 in Boyds, 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

The average sunshine in December in Boyds is 5.2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

How cold is December in Boyds?

The high-temperature during December is 44.2°F (6.8°C) and the low-temperature is 31.8°F (-0.1°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 93.2°F (34°C).

What are the most humid months in Boyds?

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

What is the average humidity in December in Boyds?

The average relative humidity in December in Boyds is 78%.

How much does it rain in Boyds in December?

In Boyds, Maryland, in December, during 10.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

How much does it snow in Boyds in December?

In Boyds, in December, snow falls for 3 days, with typically accumulated 1.57" (40mm) of snow.

What is the month with the shortest days in Boyds?

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

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

In Boyds, Maryland, the average day length in December is 9h and 28min.

When are sunrise and sunset in December in Boyds?

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

How long on average sun shines in December in Boyds?

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

What are the months with the lowest UV index in Boyds?

January, February, 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 Boyds?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
53.1°F 11.7°C
44.2°F 6.8°C
38.8°F 3.8°C
Average low temperature
37.8°F 3.2°C
31.8°F -0.1°C
25.2°F -3.8°C
Average pressure
30.14" 766mmHg
30.11" 765mmHg
30.11" 765mmHg
Average wind speed
6.7mph 10.8km/h
7mph 11.3km/h
7.6mph 12.2km/h
Average max. wind speed
7.5mph 12.1km/h
7.7mph 12.4km/h
8.3mph 13.4km/h
Average wind speed gusts
11.4mph 18.3km/h
11.5mph 18.5km/h
12.3mph 19.8km/h
Average humidity
75%
78%
74%
Average rainfall
2.44" 62mm
2.36" 60mm
1.97" 50mm
Average rainfall days
9.5
10.5
9.5
Average snowfall
0.2" 5mm
1.57" 40mm
2.68" 68mm
Average snowfall days
0.5
3
5.8
Average daylight
10h 0min
9h 3min
9h 5min
Average sunshine
5h 5min
5h 1min
5h 0min
Average sunshine days
19
18.2
17.7
Average UV index
2
2
2
Average cloud cover
36%
45%
45%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Boyds, Maryland, USA

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