December weather forecast
Tall Timbers, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Tall Timbers, Maryland, with an average temperature ranging between max 47.3°F (8.5°C) and min 38.1°F (3.4°C).

Temperature

In December, the average high-temperature marginally drops from a fresh 55°F (12.8°C) in November to a frosty 47.3°F (8.5°C). The average nighttime temperature lowers to a cold 38.1°F (3.4°C) throughout December.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Tall Timbers, during December, the rain falls for 8.8 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 147.5 rainfall days, and 20.16" (512mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Tall Timbers are January through March, November and December. In Tall Timbers, in December, during 0.8 snowfall days, 0.24" (6mm) of snow is typically accumulated. Throughout the year, there are 6 snowfall days, and 1.42" (36mm) of snow is accumulated.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:04 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:56 pm EST.

Sunshine

The average sunshine in December is 5.3h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

What are the temperatures in December?

In Tall Timbers, in December, the average high-temperature is 47.3°F (8.5°C), and the average low-temperature is 38.1°F (3.4°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in December in Tall Timbers?

The average relative humidity in December is 76%.

How many days does it rain in December?

In Tall Timbers, in December, it is raining for 8.8 days, with typically 1.14" (29mm) of accumulated precipitation.

How many days does it snow in December?

In Tall Timbers, during December, snow falls for 0.8 days and regularly aggregates up to 0.24" (6mm) of snow.

What is the month with the shortest days?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

How many hours of daylight does Tall Timbers have in December?

In December, the average day length in Tall Timbers, Maryland, is 9h and 34min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:56 pm EST.

How many hours of sunshine does Tall Timbers have in December?

In December, the average sunshine duration is 5.3h.

When is the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk 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
Tall Timbers, MD

Average temperature in December - Tall Timbers, MD
  • Average high temperature in December: 47.3°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 (41.5°F).

  • Average low temperature in December: 38.1°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).

Average pressure in December
Tall Timbers, MD

Average pressure in December - Tall Timbers, 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 (29.95"Hg).

Average wind speed in December
Tall Timbers, MD

Average wind speed in December - Tall Timbers, MD
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

Average humidity in December
Tall Timbers, MD

Average humidity in December - Tall Timbers, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (73%).

Average rainfall in December
Tall Timbers, MD

Average rainfall in December - Tall Timbers, MD
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is January (0.98").

Average rainfall days in December
Tall Timbers, MD

Average rainfall days in December - Tall Timbers, MD
  • Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.4 days).

Average snowfall in December
Tall Timbers, MD

Average snowfall in December - Tall Timbers, MD
  • Average snowfall in December: 0.24"

The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Tall Timbers, MD

Average snowfall days in December - Tall Timbers, MD
  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is February (2.3 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
Tall Timbers, MD

Average daylight in December / Average sunshine in December - Tall Timbers, MD
  • Average daylight in December: 9h and 4min

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 36min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days in December
Tall Timbers, MD

Average sunshine days in December - Tall Timbers, MD
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (11.3 days).

Average UV index in December
Tall Timbers, MD

Average UV index in December - Tall Timbers, 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
Tall Timbers, MD

Average cloud cover in December - Tall Timbers, MD
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in December
Tall Timbers, MD

Average visibility in December - Tall Timbers, 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).

Tall Timbers, Maryland, USA

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