December weather forecast
Villanova, PA

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Weather in December

The first month of the winter, December, is still a chilly month in Villanova, Pennsylvania, with temperature in the range of an average low of 32°F (0°C) and an average high of 43.2°F (6.2°C).

Temperature

December's arrival comes with a mild decrease in the average high-temperature, moving subtly from a fresh 52°F (11.1°C) in November to a chilly 43.2°F (6.2°C). Villanova's nighttime temperature during December is consistently averaged at an icy 32°F (0°C).

Humidity

In Villanova, the average relative humidity in December is 77%.

Rainfall

In December, the rain falls for 6.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. In Villanova, during the entire year, the rain falls for 111.8 days and collects up to 9.69" (246mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Villanova, in December, snow falls for 2.1 days, with typically accumulated 0.63" (16mm) of snow. Throughout the year, there are 15.1 snowfall days, and 3.66" (93mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:46 pm EST.

Sunshine

In Villanova, the average sunshine in December is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 43.2°F (6.2°C) and a low-temperature of 32°F (0°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 89.6°F (32°C).

What is the average humidity in December in Villanova?

The average relative humidity in December is 77%.

How many days does it rain in December in Villanova?

In Villanova, during December, the rain falls for 6.5 days and regularly aggregates up to 0.91" (23mm) of precipitation.

How much does it snow in December?

In Villanova, in December, snow falls for 2.1 days, with typically accumulated 0.63" (16mm) 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 Villanova?

In December, the average day length is 9h and 23min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:46 pm EST.

How many hours of sunshine does Villanova have in December?

In Villanova, the average sunshine duration in December is 4.9h.

What are the months with the lowest UV index?

January, February, 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 Villanova, Pennsylvania, the average daily maximum UV index in December is 2. A UV Index 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
Villanova, PA

Average temperature in December - Villanova, PA
  • Average high temperature in December: 43.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in December
Villanova, PA

Average pressure in December - Villanova, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Villanova, PA

Average wind speed in December - Villanova, PA
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Villanova, PA

Average humidity in December - Villanova, PA
  • Average humidity in December: 77%

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

Average rainfall in December
Villanova, PA

Average rainfall in December - Villanova, PA
  • Average rainfall in December: 0.91"

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in December
Villanova, PA

Average rainfall days in December - Villanova, PA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in December
Villanova, PA

Average snowfall in December - Villanova, PA
  • Average snowfall in December: 0.63"

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Villanova, PA

Average snowfall days in December - Villanova, PA
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (4.5 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
Villanova, PA

Average daylight in December / Average sunshine in December - Villanova, 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: 4h and 5min

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

Average sunshine days in December
Villanova, PA

Average sunshine days in December - Villanova, PA
  • Average sunshine days in December: 22.2 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

Average UV index in December
Villanova, PA

Average UV index in December - Villanova, PA
  • 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
Villanova, PA

Average cloud cover in December - Villanova, PA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Villanova, PA

Average visibility in December - Villanova, PA
  • Average visibility in December: 6mi

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

Villanova, Pennsylvania, USA

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