December weather forecast
Quarryville, NJ

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Weather in December

December, the first month of the winter in Quarryville, is still a cold month, with an average temperature ranging between min 26.8°F (-2.9°C) and max 38.3°F (3.5°C).

Temperature

The arrival of December signals a shift in temperature, down from a chilly 48.4°F (9.1°C) in November to a wintry 38.3°F (3.5°C). During the month of December, an average temperature of 26.8°F (-2.9°C) is noted during the nights.

Humidity

February, October and December, with an average relative humidity of 82%, are the most humid months.

Rainfall

In Quarryville, in December, it is raining for 11.9 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, there are 164.9 rainfall days, and 31.89" (810mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Quarryville, during December, snow falls for 6.4 days and regularly aggregates up to 3.39" (86mm) of snow. Throughout the year, in Quarryville, New Jersey, there are 36.9 snowfall days, and 19.84" (504mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:30 pm. On the last day of December, in Quarryville, sunrise is at 7:23 am and sunset at 4:39 pm EST.

Sunshine

In December, the average sunshine is 4.6h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 1 in December translates into this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

How cold does it get in Quarryville in December?

The high-temperature, in December, in Quarryville, is 38.3°F (3.5°C), while the low-temperature averages to 26.8°F (-2.9°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in July is estimated at 89.6°F (32°C).

What is the most humid month in Quarryville?

The months with the highest humidity in Quarryville, New Jersey, are February, October and December, with an average relative humidity of 82%.

What is the average humidity in December in Quarryville?

In Quarryville, New Jersey, the average relative humidity in December is 82%.

How much does it rain in Quarryville in December?

In December, the rain falls for 11.9 days. Throughout December, 3.03" (77mm) of precipitation is accumulated.

How many days does it snow in December in Quarryville?

In Quarryville, New Jersey, in December, snow falls for 6.4 days, with typically accumulated 3.39" (86mm) of snow.

What is the month with the shortest days in Quarryville?

December has the shortest days of the year in Quarryville, with an average of 9h and 18min of daylight.

How many hours of daylight does Quarryville have in December?

In Quarryville, New Jersey, the average day length in December is 9h and 16min.

When are sunrise and sunset in December in Quarryville?

On the first day of December in Quarryville, New Jersey, sunrise is at 7:05 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:39 pm EST.

How long on average sun shines in December in Quarryville?

In Quarryville, New Jersey, the average sunshine duration in December is 4.6h.

What is the month with the lowest UV index in Quarryville?

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

What is the UV index intensity in December in Quarryville?

In December, the average daily maximum UV index is 1. 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
Quarryville, NJ

Average temperature in December - Quarryville, NJ
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in December: 26.8°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in December
Quarryville, NJ

Average pressure in December - Quarryville, NJ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Quarryville, NJ

Average wind speed in December - Quarryville, NJ
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
Quarryville, NJ

Average humidity in December - Quarryville, NJ
  • Average humidity in December: 82%

The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in December
Quarryville, NJ

Average rainfall in December - Quarryville, NJ
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in December
Quarryville, NJ

Average rainfall days in December - Quarryville, NJ
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.7 days).

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Average snowfall in December
Quarryville, NJ

Average snowfall in December - Quarryville, NJ
  • Average snowfall in December: 3.39"

The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Quarryville, NJ

Average snowfall days in December - Quarryville, NJ
  • Average snowfall days in December: 6.4 days

The months with the highest number of snowfall days are January and February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Quarryville, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in December
Quarryville, NJ

Average sunshine days in December - Quarryville, NJ
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is April (10.4 days).

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Average UV index in December
Quarryville, NJ

Average UV index in December - Quarryville, NJ
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Quarryville, NJ

Average cloud cover in December - Quarryville, NJ
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 36).

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Average visibility in December
Quarryville, NJ

Average visibility in December - Quarryville, NJ
  • Average visibility in December: 5mi

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

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Quarryville, New Jersey, USA

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