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 comes with a decrease in the average high-temperature, falling from a chilly 43.7°F (6.5°C) in November to an icy 34.3°F (1.3°C). December nights cool down to an average low-temperature of 24.1°F (-4.4°C).Humidity
The average relative humidity in December is 87%.Rainfall
In Port Allegany, in December, during 9.8 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, in Port Allegany, there are 162.1 rainfall days, and 27.36" (695mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Port Allegany. In December, in Port Allegany, it is snowing for 19.2 days. Throughout December, 9.37" (238mm) of snow is accumulated. Throughout the year, there are 96.1 snowfall days, and 45.55" (1157mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December in Port Allegany, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:52 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 2.6h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold is December in Port Allegany?
What is the average humidity in December in Port Allegany?
How much does it rain in Port Allegany in December?
How many days does it snow in December in Port Allegany?
What is the month with the shortest days in Port Allegany?
How many hours of daylight does Port Allegany have in December?
When are sunrise and sunset in December in Port Allegany?
What are the months with the least sunshine in Port Allegany?
How many hours of sunshine does Port Allegany have in December?
What are the months with the lowest UV index in Port Allegany?
What is the UV index intensity in December in Port Allegany?
Average temperature in December
Port Allegany, PA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
Port Allegany, 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 (29.94"Hg).
Average wind speed in December
Port Allegany, PA
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Port Allegany, PA
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (78%).
Average rainfall in December
Port Allegany, PA
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is August (1.85").
Average rainfall days in December
Port Allegany, PA
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Port Allegany, PA
- Average snowfall in December: 9.37"
The month with the highest snowfall is February (10.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Port Allegany, PA
- Average snowfall days in December: 19.2 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Port Allegany, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The months with the least sunshine are January and December (Average sunshine: 2h and 36min).
Average sunshine days in December
Port Allegany, PA
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is February (5.2 days).
Average UV index in December
Port Allegany, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Port Allegany, PA
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Port Allegany, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, August, September and December (4mi).
Port Allegany, Pennsylvania, USA
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