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
In December, the average high-temperature marginally drops from a fresh 51.1°F (10.6°C) in November to a wintry 42.3°F (5.7°C). An average low-temperature of 30.9°F (-0.6°C) is anticipated throughout the nights during December.Humidity
In December, the average relative humidity in Perkiomen Junction, Pennsylvania, is 79%.Rainfall
In December, in Perkiomen Junction, the rain falls for 7.9 days. Throughout December, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Perkiomen Junction, Pennsylvania, there are 132.3 rainfall days, and 13.98" (355mm) of precipitation is accumulated.Snowfall
Months with snowfall in Perkiomen Junction are January through March, November and December. In Perkiomen Junction, during December, snow falls for 2.5 days and regularly aggregates up to 0.51" (13mm) of snow. In Perkiomen Junction, during the entire year, snow falls for 15.1 days and aggregates up to 2.2" (56mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Perkiomen Junction, Pennsylvania.On the first day of December in Perkiomen Junction, sunrise is at 7:05 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.
Sunshine
In December, the average sunshine in Perkiomen Junction is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Perkiomen Junction. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
Is December cold in Perkiomen Junction?
What is the average humidity in December in Perkiomen Junction?
How much does it rain in Perkiomen Junction in December?
How many days does it snow in December in Perkiomen Junction?
What is the month with the shortest days in Perkiomen Junction?
What is the average length of the day in December in Perkiomen Junction?
What time are sunrise and sunset in December in Perkiomen Junction?
How many hours of sunshine does Perkiomen Junction have in December?
What are the months with the lowest UV index in Perkiomen Junction?
What is the UV index intensity in December in Perkiomen Junction?
Average temperature in December
Perkiomen Junction, PA
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Perkiomen Junction, PA
- Average pressure in December: 30.1"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
Perkiomen Junction, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Perkiomen Junction, PA
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in December
Perkiomen Junction, PA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in December
Perkiomen Junction, PA
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
Perkiomen Junction, PA
- Average snowfall in December: 0.51"
The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Perkiomen Junction, PA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Perkiomen Junction, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Perkiomen Junction, PA
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in December
Perkiomen Junction, 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
Perkiomen Junction, 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
Perkiomen Junction, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Perkiomen Junction, Pennsylvania, USA
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