December weather forecast
Alverton, PA

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Weather in December

December, the first month of the winter in Alverton, is still a cold month, with an average temperature fluctuating between 27.7°F (-2.4°C) and 39.2°F (4°C).

Temperature

As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a chilly 48.9°F (9.4°C) to an icy 39.2°F (4°C). In Alverton, the expected average low-temperature for December is a freezing cold 27.7°F (-2.4°C).

Humidity

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

Rainfall

In December, the rain falls for 13.1 days. Throughout December, 3.03" (77mm) of precipitation is accumulated. In Alverton, during the entire year, the rain falls for 185.4 days and collects up to 34.02" (864mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Alverton, in December, snow falls for 12.8 days, with typically accumulated 6.1" (155mm) of snow. In Alverton, during the entire year, snow falls for 63.2 days and aggregates up to 29.02" (737mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:02 pm EST.

Sunshine

The average sunshine in December is 3.6h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.

Frequently asked questions

How cold does it get in December?

The high-temperature, in December, in Alverton, records 39.2°F (4°C), while the low-temperature is 27.7°F (-2.4°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 84.2°F (29°C).

What is the average humidity in December?

The average relative humidity in December is 84%.

How much does it rain in December?

In Alverton, in December, during 13.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Alverton, Pennsylvania, during December, snow falls for 12.8 days and regularly aggregates up to 6.1" (155mm) 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 December, the average day length is 9h and 22min.

What time are sunrise and sunset in December in Alverton?

On the first day of December, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:02 pm EST.

How long on average sun shines in December?

In Alverton, the average sunshine duration in December is 3.6h.

When is the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Alverton, PA

Average temperature in December - Alverton, PA
  • Average high temperature in December: 39.2°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in December: 27.7°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in December
Alverton, PA

Average pressure in December - Alverton, 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
Alverton, PA

Average wind speed in December - Alverton, PA
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Alverton, PA

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

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

Average rainfall in December
Alverton, PA

Average rainfall in December - Alverton, PA
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.01").

Average rainfall days in December
Alverton, PA

Average rainfall days in December - Alverton, PA
  • Average rainfall days in December: 13.1 days

The month with the highest number of rainy days is May (22 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in December
Alverton, PA

Average snowfall in December - Alverton, PA
  • Average snowfall in December: 6.1"

The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Alverton, PA

Average snowfall days in December - Alverton, PA
  • Average snowfall days in December: 12.8 days

The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Alverton, 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 24min).

  • Average sunshine in December: 3h and 4min

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
Alverton, PA

Average sunshine days in December - Alverton, PA
  • Average sunshine days in December: 9.7 days

The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.5 days).

Average UV index in December
Alverton, PA

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

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

Average cloud cover in December
Alverton, PA

Average cloud cover in December - Alverton, 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
Alverton, PA

Average visibility in December - Alverton, 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).

Alverton, Pennsylvania, USA

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