December weather forecast
McAdams, PA

Share

Weather in December

December, the first month of the winter in McAdams, is also an icy month, with an average temperature varying between 27.9°F (-2.3°C) and 39.4°F (4.1°C).

Temperature

The transition into December indicates a reduction in the average high-temperature, down to a wintry 39.4°F (4.1°C) from November's frosty 48.9°F (9.4°C). McAdams experiences a nighttime temperature average of 27.9°F (-2.3°C) during December.

Humidity

The average relative humidity in December in McAdams is 84%.

Rainfall

In McAdams, during December, the rain falls for 12.9 days and regularly aggregates up to 2.95" (75mm) of precipitation. Throughout the year, in McAdams, there are 183.5 rainfall days, and 34.37" (873mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in McAdams. In December, in McAdams, it is snowing for 13.2 days. Throughout December, 4.49" (114mm) of snow is accumulated. Throughout the year, there are 61.6 snowfall days, and 23.9" (607mm) of snow is accumulated.

Daylight

December has the shortest days of the year in McAdams, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:04 pm EST.

Sunshine

The average sunshine in December is 3.4h.

UV index

December is the month with the lowest UV index in McAdams, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Around midday, solar radiation is most harmful; hence, exposure should be limited. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
[Resources]

Frequently asked questions

Is it cold in McAdams during December?

An average high-temperature, in December, in McAdams, is 39.4°F (4.1°C) and the average low-temperature is 27.9°F (-2.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in December in McAdams?

In McAdams, the average relative humidity in December is 84%.

How many days does it rain in December in McAdams?

In McAdams, Pennsylvania, in December, it is raining for 12.9 days, with typically 2.95" (75mm) of accumulated precipitation.

How much does it snow in McAdams in December?

In McAdams, Pennsylvania, in December, snow falls for 13.2 days, with typically accumulated 4.49" (114mm) of snow.

What is the month with the shortest days in McAdams?

The month with the shortest days in McAdams, Pennsylvania, is December, with an average of 9h and 18min of daylight.

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

In December, the average day length is 9h and 21min.

When are sunrise and sunset in December in McAdams?

In December, on the first day of the month, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, in McAdams, sunrise is at 7:43 am and sunset at 5:04 pm EST.

How long on average sun shines in December in McAdams?

In December, the average sunshine duration in McAdams is 3.4h.

When is the lowest UV index in McAdams?

With an average maximum UV index of 1, December is the month with the lowest UV index.

What is the UV index intensity in December in McAdams?

The average daily maximum UV index in December in McAdams, Pennsylvania, is 1. A UV Index reading of 2, and below, represents a low health risk from 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
McAdams, PA

Average temperature in December - McAdams, PA
  • Average high temperature in December: 39.4°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

[Resources]

Average pressure in December
McAdams, PA

Average pressure in December - McAdams, PA
  • 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).

[Resources]

Average wind speed in December
McAdams, PA

Average wind speed in December - McAdams, PA
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

[Resources]

Average humidity in December
McAdams, PA

Average humidity in December - McAdams, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

[Resources]

Average rainfall in December
McAdams, PA

Average rainfall in December - McAdams, PA
  • Average rainfall in December: 2.95"

The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is November (2.28").

[Resources]

Average rainfall days in December
McAdams, PA

Average rainfall days in December - McAdams, PA
  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (10.7 days).

[Resources]

Average snowfall in December
McAdams, PA

Average snowfall in December - McAdams, PA
  • Average snowfall in December: 4.49"

The month with the highest snowfall is January (6.1").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
McAdams, PA

Average snowfall days in December - McAdams, PA
  • Average snowfall days in December: 13.2 days

The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
McAdams, PA

Average daylight in December / Average sunshine in December - McAdams, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

[Resources]

Average sunshine days in December
McAdams, PA

Average sunshine days in December - McAdams, PA
  • Average sunshine days in December: 9.5 days

The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is January (7.8 days).

[Resources]

Average UV index in December
McAdams, PA

Average UV index in December - McAdams, PA
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

[Resources]

Average cloud cover in December
McAdams, PA

Average cloud cover in December - McAdams, PA
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).

[Resources]

Average visibility in December
McAdams, PA

Average visibility in December - McAdams, PA
  • Average visibility in December: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).

[Resources]

McAdams, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location