December weather forecast
Quarryville, PA

Share

Weather in December

December, the first month of the winter in Quarryville, is still a cold month, with an average temperature varying between 31.1°F (-0.5°C) and 42.4°F (5.8°C).

Temperature

The arrival of December signals a subtle shift in temperature, down from a fresh 51.1°F (10.6°C) in November to an icy 42.4°F (5.8°C). Throughout December nights, Quarryville registers an average low-temperature of 31.1°F (-0.5°C).

Humidity

The average relative humidity in December is 79%.

Rainfall

In Quarryville, in December, it is raining for 10.5 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, in Quarryville, there are 156.5 rainfall days, and 28.74" (730mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Quarryville, in December, during 3 snowfall days, 1.26" (32mm) of snow is typically accumulated. In Quarryville, Pennsylvania, during the entire year, snow falls for 20.3 days and aggregates up to 11.54" (293mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:49 pm EST.

Sunshine

In December, the average sunshine is 5h.

UV index

The months with the lowest UV index in Quarryville 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 unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.

Frequently asked questions

How cold is December in Quarryville?

An average high-temperature, in December, in Quarryville, is 42.4°F (5.8°C) and the average low-temperature is 31.1°F (-0.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in December?

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

How much does it rain in December?

In Quarryville, in December, during 10.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Quarryville, in December, during 3 snowfall days, 1.26" (32mm) of snow is typically accumulated.

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?

The average day length in December is 9h and 24min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:49 pm EST.

How many hours of sunshine does Quarryville have in December?

In Quarryville, the average sunshine duration in December is 5h.

When is the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes 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
Quarryville, PA

Average temperature in December - Quarryville, PA
  • Average high temperature in December: 42.4°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 (36°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in December
Quarryville, PA

Average pressure in December - Quarryville, PA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Quarryville, PA

Average wind speed in December - Quarryville, PA
  • Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in December
Quarryville, PA

Average humidity in December - Quarryville, PA
  • Average humidity in December: 79%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March and April (76%).

Average rainfall in December
Quarryville, PA

Average rainfall in December - Quarryville, PA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is August (3.7").
The driest month (with the least rainfall) is February (1.89").

Average rainfall days in December
Quarryville, PA

Average rainfall days in December - Quarryville, PA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (8.4 days).

Average snowfall in December
Quarryville, PA

Average snowfall in December - Quarryville, PA
  • Average snowfall in December: 1.26"

The month with the highest snowfall is March (4.02").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Quarryville, PA

Average snowfall days in December - Quarryville, PA
  • Average snowfall days in December: 3 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Quarryville, 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: 5h and 0min

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 42min).

Average sunshine days in December
Quarryville, PA

Average sunshine days in December - Quarryville, PA
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in December
Quarryville, PA

Average UV index in December - Quarryville, 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
Quarryville, PA

Average cloud cover in December - Quarryville, PA
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Quarryville, PA

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

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

Quarryville, Pennsylvania, USA

Weather forecast for your location

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