December weather forecast
Walker Mill, MD

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Weather in December

The first month of the winter, December, is also a frosty month in Walker Mill, Maryland, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 45.7°F (7.6°C).

Temperature

Start of December brings a slight shift in the average high-temperature, dipping a bit from November's cool 54.5°F (12.5°C) to a chilly 45.7°F (7.6°C). Walker Mill sees an average low-temperature of 34.7°F (1.5°C) during December.

Humidity

The average relative humidity in December in Walker Mill is 76%.

Rainfall

In Walker Mill, during December, the rain falls for 11.1 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 164.8 rainfall days, and 32.87" (835mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Walker Mill. In Walker Mill, in December, during 2.5 snowfall days, 1.06" (27mm) of snow is typically accumulated. Throughout the year, there are 15.1 snowfall days, and 8.5" (216mm) 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 the month, sunrise is at 7:07 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:55 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 2 in December suggests the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

The high-temperature during December is 45.7°F (7.6°C) and the low-temperature is 34.7°F (1.5°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 evaluated at 93.2°F (34°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How much does it rain in December?

In Walker Mill, in December, it is raining for 11.1 days, with typically 2.68" (68mm) of accumulated precipitation.

How many days does it snow in December?

In December, it is snowing for 2.5 days. Throughout December, 1.06" (27mm) of snow is accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Walker Mill have in December?

The average day length in December is 9h and 30min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:55 pm EST.

How many hours of sunshine does Walker Mill have in December?

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

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's 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
Walker Mill, MD

Average temperature in December - Walker Mill, MD
  • Average high temperature in December: 45.7°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

Average pressure in December
Walker Mill, MD

Average pressure in December - Walker Mill, 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
Walker Mill, MD

Average wind speed in December - Walker Mill, MD
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).

Average humidity in December
Walker Mill, MD

Average humidity in December - Walker Mill, MD
  • Average humidity in December: 76%

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

Average rainfall in December
Walker Mill, MD

Average rainfall in December - Walker Mill, MD
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in December
Walker Mill, MD

Average rainfall days in December - Walker Mill, MD
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in December
Walker Mill, MD

Average snowfall in December - Walker Mill, MD
  • Average snowfall in December: 1.06"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Walker Mill, MD

Average snowfall days in December - Walker Mill, MD
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is January (4.6 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
Walker Mill, MD

Average daylight in December / Average sunshine in December - Walker Mill, 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: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in December
Walker Mill, MD

Average sunshine days in December - Walker Mill, MD
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in December
Walker Mill, MD

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

Average cloud cover in December
Walker Mill, MD

Average cloud cover in December - Walker Mill, 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
Walker Mill, MD

Average visibility in December - Walker Mill, 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).

Walker Mill, Maryland, USA

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