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
The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 50.9°F (10.5°C) in November to a wintry 41.5°F (5.3°C). During December, Perkiomenville experiences an average low-temperature of 30.4°F (-0.9°C) at night.Humidity
In December, the average relative humidity in Perkiomenville is 80%.Rainfall
In Perkiomenville, during December, the rain falls for 8 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, in Perkiomenville, there are 128.6 rainfall days, and 15.16" (385mm) of precipitation is accumulated.Snowfall
Months with snowfall in Perkiomenville are January through May, November and December. In Perkiomenville, in December, snow falls for 2 days, with typically accumulated 1.34" (34mm) of snow. Throughout the year, there are 17 snowfall days, and 5.43" (138mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:06 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:45 pm EST.
Sunshine
In December, the average sunshine in Perkiomenville 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 Perkiomenville. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
How cold is December in Perkiomenville?
What is the average humidity in December in Perkiomenville?
How many days does it rain in December in Perkiomenville?
How much does it snow in Perkiomenville in December?
What is the month with the shortest days in Perkiomenville?
What is the average length of the day in December in Perkiomenville?
When is the sunrise / sunset in December in Perkiomenville?
How many hours of sunshine does Perkiomenville have in December?
What is the month with the lowest UV index in Perkiomenville?
What is the UV index intensity in December in Perkiomenville?
Average temperature in December
Perkiomenville, PA
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Perkiomenville, PA
- Average pressure in December: 30.09"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
Perkiomenville, PA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Perkiomenville, PA
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in December
Perkiomenville, PA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is July (1.97").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Perkiomenville, PA
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Perkiomenville, PA
- Average snowfall in December: 1.34"
The month with the highest snowfall is March (1.46").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Perkiomenville, PA
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Perkiomenville, 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
Perkiomenville, PA
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Perkiomenville, 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
Perkiomenville, PA
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Perkiomenville, 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).
Perkiomenville, Pennsylvania, USA
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