December weather forecast
Adamstown, MD

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Weather in December

December, the first month of the winter in Adamstown, is still a chilly month, with an average temperature varying between 30.9°F (-0.6°C) and 43.2°F (6.2°C).

Temperature

Adamstown's progression into December involves a minor drop in the average high-temperature, slightly receding from a cool 52.2°F (11.2°C) in November to a chilly 43.2°F (6.2°C). During the month of December, the nighttime temperature falls to an average of 30.9°F (-0.6°C).

Humidity

May, October and December, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Adamstown, Maryland, during December, the rain falls for 10.2 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 159.7 rainfall days, and 30.04" (763mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. In December, in Adamstown, it is snowing for 3.2 days. Throughout December, 1.69" (43mm) of snow is accumulated. Throughout the year, in Adamstown, Maryland, there are 19.8 snowfall days, and 11.46" (291mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:47 pm. On the last day of December, in Adamstown, sunrise is at 7:29 am and sunset at 4:56 pm EST.

Sunshine

In December, the average sunshine is 5h.

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 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:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

During December, Adamstown experiences an average high-temperature of 43.2°F (6.2°C) and a low-temperature of 30.9°F (-0.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is appraised at 91.4°F (33°C).

What is the most humid month?

May, October and December, with an average relative humidity of 79%, are most humid months.

What is the average humidity in December in Adamstown?

In Adamstown, Maryland, the average relative humidity in December is 79%.

How much does it rain in December?

In Adamstown, in December, during 10.2 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Adamstown, in December, during 3.2 snowfall days, 1.69" (43mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 27min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:11 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:56 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 5h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Adamstown, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe 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
Adamstown, MD

Average temperature in December - Adamstown, MD
  • Average high temperature in December: 43.2°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 (37.6°F).

  • Average low temperature in December: 30.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average pressure in December
Adamstown, MD

Average pressure in December - Adamstown, 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
Adamstown, MD

Average wind speed in December - Adamstown, MD
  • Average wind speed in December: 7.1mph

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 (4.7mph).

Average humidity in December
Adamstown, MD

Average humidity in December - Adamstown, MD
  • Average humidity in December: 79%

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in December
Adamstown, MD

Average rainfall in December - Adamstown, MD
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in December
Adamstown, MD

Average rainfall days in December - Adamstown, MD
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in December
Adamstown, MD

Average snowfall in December - Adamstown, MD
  • Average snowfall in December: 1.69"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Adamstown, MD

Average snowfall days in December - Adamstown, MD
  • Average snowfall days in December: 3.2 days

The months with the highest number of snowfall days are January and February (6.3 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
Adamstown, MD

Average daylight in December / Average sunshine in December - Adamstown, 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 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

Average sunshine days in December
Adamstown, MD

Average sunshine days in December - Adamstown, MD
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in December
Adamstown, MD

Average UV index in December - Adamstown, 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
Adamstown, MD

Average cloud cover in December - Adamstown, MD
  • Average cloud cover in December: 47

The months with the most cloud cover are January, February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Adamstown, MD

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

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

Adamstown, Maryland, USA

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