December weather forecast
Montgomery Woods, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Montgomery Woods, Maryland, with temperature in the range of an average low of 34.2°F (1.2°C) and an average high of 45.5°F (7.5°C).

Temperature

December brings a slight decrease in the average high-temperature, shifting from a fresh 53.4°F (11.9°C) in November to a frosty 45.5°F (7.5°C). In Montgomery Woods, the average low-temperature during the month of December is an icy 34.2°F (1.2°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Montgomery Woods, in December, it is raining for 10.1 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 156.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In December, it is snowing for 2.2 days. Throughout December, 0.79" (20mm) of snow is accumulated. Throughout the year, in Montgomery Woods, there are 12.8 snowfall days, and 6.77" (172mm) 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, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm EST.

Sunshine

In Montgomery Woods, Maryland, 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 exposure to the Sun's UV rays for average individuals.
Note: In December, a regular UV index of 2 translates into these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.

Frequently asked questions

What is the average December temperature?

In Montgomery Woods, in December, the average high-temperature is 45.5°F (7.5°C), and the average low-temperature is 34.2°F (1.2°C). 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 computed to be 91.4°F (33°C).

What is the average humidity in December in Montgomery Woods?

The average relative humidity in December is 76%.

How many days does it rain in December?

In December, the rain falls for 10.1 days. Throughout December, 2.28" (58mm) of precipitation is accumulated.

How much does it snow in December?

In Montgomery Woods, during December, snow falls for 2.2 days and regularly aggregates up to 0.79" (20mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Montgomery Woods have in December?

In Montgomery Woods, the average day length in December is 9h and 28min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 5.2h.

What is the month with 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 Montgomery Woods.

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to 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
Montgomery Woods, MD

Average temperature in December - Montgomery Woods, MD
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in December
Montgomery Woods, MD

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

Average wind speed in December - Montgomery Woods, MD
  • Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
Montgomery Woods, MD

Average humidity in December - Montgomery Woods, MD
  • Average humidity in December: 76%

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

Average rainfall in December
Montgomery Woods, MD

Average rainfall in December - Montgomery Woods, MD
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

Average rainfall days in December
Montgomery Woods, MD

Average rainfall days in December - Montgomery Woods, MD
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in December
Montgomery Woods, MD

Average snowfall in December - Montgomery Woods, MD
  • Average snowfall in December: 0.79"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Montgomery Woods, MD

Average snowfall days in December - Montgomery Woods, MD
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.9 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
Montgomery Woods, MD

Average daylight in December / Average sunshine in December - Montgomery Woods, 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 February (Average sunshine: 5h and 6min).

Average sunshine days in December
Montgomery Woods, MD

Average sunshine days in December - Montgomery Woods, MD
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in December
Montgomery Woods, MD

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

Average cloud cover in December
Montgomery Woods, MD

Average cloud cover in December - Montgomery Woods, 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
Montgomery Woods, MD

Average visibility in December - Montgomery 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).

Montgomery Woods, Maryland, USA

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