December weather forecast
Aleppo, PA

Share

Weather in December

The first month of the winter, December, is also a wintry month in Aleppo, Pennsylvania, with an average temperature fluctuating between 40.1°F (4.5°C) and 28.6°F (-1.9°C).

Temperature

Transition into December marks a drop in the average high-temperature, moving from a frosty 49.8°F (9.9°C) in November to an icy 40.1°F (4.5°C). Aleppo experiences a mean temperature of 28.6°F (-1.9°C) during December nights.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Aleppo, during December, the rain falls for 13.2 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, there are 184.2 rainfall days, and 35.75" (908mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Aleppo, Pennsylvania, in December, during 12.9 snowfall days, 5" (127mm) of snow is typically accumulated. Throughout the year, there are 61.5 snowfall days, and 25.98" (660mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:42 am and sunset at 5:07 pm EST.

Sunshine

The average sunshine in December is 3.5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Aleppo. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold is December?

Aleppo in December has an average high-temperature of 40.1°F (4.5°C) and an average low-temperature of 28.6°F (-1.9°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December in Aleppo?

In Aleppo, the average relative humidity in December is 83%.

How much does it rain in December?

In Aleppo, in December, it is raining for 13.2 days, with typically 3.11" (79mm) of accumulated precipitation.

How many days does it snow in December?

In Aleppo, during December, snow falls for 12.9 days and regularly aggregates up to 5" (127mm) of snow.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In Aleppo, the average day length in December is 9h and 24min.

When are sunrise and sunset in December?

On the first day of December in Aleppo, sunrise is at 7:24 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:07 pm EST.

How long on average sun shines in December in Aleppo?

The average sunshine duration in December is 3.5h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Aleppo, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Aleppo, PA

Average temperature in December - Aleppo, PA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in December
Aleppo, PA

Average pressure in December - Aleppo, PA
  • 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
Aleppo, PA

Average wind speed in December - Aleppo, PA
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in December
Aleppo, PA

Average humidity in December - Aleppo, PA
  • Average humidity in December: 83%

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

Average rainfall in December
Aleppo, PA

Average rainfall in December - Aleppo, PA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in December
Aleppo, PA

Average rainfall days in December - Aleppo, PA
  • Average rainfall days in December: 13.2 days

The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is January (10.7 days).

Average snowfall in December
Aleppo, PA

Average snowfall in December - Aleppo, PA
  • Average snowfall in December: 5"

The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Aleppo, PA

Average snowfall days in December - Aleppo, PA
  • Average snowfall days in December: 12.9 days

The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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 24min).

  • Average sunshine in December: 3h and 3min

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

Average sunshine days in December
Aleppo, PA

Average sunshine days in December - Aleppo, PA
  • Average sunshine days in December: 10.4 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is January (7.5 days).

Average UV index in December
Aleppo, PA

Average UV index in December - Aleppo, PA
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Aleppo, PA

Average cloud cover in December - Aleppo, 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 35).

Average visibility in December
Aleppo, PA

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

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

Aleppo, Pennsylvania, USA

Weather forecast for your location

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