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
Arrival of December comes with a reduction in the average high-temperature, falling from a fresh 52°F (11.1°C) in November to a chilly 43°F (6.1°C). During the month of December, the nighttime temperature falls to an average of 31.3°F (-0.4°C).Humidity
February, October and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Yardley, during December, the rain falls for 7.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, in Yardley, there are 116.7 rainfall days, and 10.12" (257mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In December, in Yardley, it is snowing for 2.5 days. Throughout December, 0.43" (11mm) of snow is accumulated. Throughout the year, in Yardley, there are 14.2 snowfall days, and 2.44" (62mm) of snow is accumulated.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 7:03 am and sunset at 4:34 pm. On the last day of December, in Yardley, sunrise is at 7:21 am and sunset at 4:43 pm EST.
Sunshine
The average sunshine in December in Yardley is 5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
How cold does it get in Yardley in December?
What are the most humid months in Yardley?
What is the average humidity in December in Yardley?
How much does it rain in Yardley in December?
How many days does it snow in December in Yardley?
What is the month with the shortest days in Yardley?
What is the average length of the day in December in Yardley?
When are sunrise and sunset in December in Yardley?
How long on average sun shines in December in Yardley?
What is the month with the lowest UV index in Yardley?
How high is the UV index in December in Yardley?
Average temperature in December
Yardley, PA
- Average high temperature in December: 43°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Yardley, PA
- Average pressure in December: 30.09"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).
Average wind speed in December
Yardley, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Yardley, PA
- Average humidity in December: 78%
The months with the highest relative humidity are February, October and December (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Yardley, PA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is July (1.26").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in December
Yardley, PA
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in December
Yardley, PA
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Yardley, PA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Yardley, 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 48min).
Average sunshine days in December
Yardley, PA
- Average sunshine days in December: 21.6 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in December
Yardley, 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, March, November and December (UV index 2).
Average cloud cover in December
Yardley, PA
- Average cloud cover in December: 47
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Yardley, 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).
Yardley, Pennsylvania, USA
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