Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's arrival comes with a mild decrease in the average high-temperature, moving subtly from a cool 51.1°F (10.6°C) in November to a cold 42.4°F (5.8°C). Quarryville's nights in December experience an average temperature drop to a subzero cold 31.1°F (-0.5°C).Humidity
In December, the average relative humidity in Quarryville, Pennsylvania, is 79%.Rainfall
In December, the rain falls for 10.5 days. Throughout December, 2.13" (54mm) of precipitation is accumulated. Throughout the year, in Quarryville, there are 156.5 rainfall days, and 28.74" (730mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Quarryville. In Quarryville, Pennsylvania, in December, snow falls for 3 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, there are 20.3 snowfall days, and 11.54" (293mm) of snow is accumulated.Daylight
The month with the shortest days in Quarryville is December, 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
The average sunshine in December in Quarryville is 5h.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 of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
How cold is December in Quarryville?
What is the average humidity in December in Quarryville?
How many days does it rain in December in Quarryville?
How many days does it snow in December in Quarryville?
What is the month with the shortest days in Quarryville?
How many hours of daylight does Quarryville have in December?
What time are sunrise and sunset in December in Quarryville?
How many hours of sunshine does Quarryville have in December?
What is the month with the lowest UV index in Quarryville?
How high is the UV index in December in Quarryville?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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
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