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
A subtle decrease in the average high-temperature marks December, falling from November's chilly 49.8°F (9.9°C) to a cold 40.1°F (4.5°C). In Glendon, the expected average low-temperature for December is a subzero cold 28.9°F (-1.7°C).Humidity
February, October and December, with an average relative humidity of 81%, are the most humid months in Glendon.Rainfall
In December, in Glendon, Pennsylvania, the rain falls for 10.1 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. In Glendon, during the entire year, the rain falls for 156.5 days and collects up to 31.97" (812mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Glendon, during December, snow falls for 4.4 days and regularly aggregates up to 2.2" (56mm) of snow. Throughout the year, there are 23.7 snowfall days, and 13.39" (340mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:43 pm EST.
Sunshine
In Glendon, Pennsylvania, the average sunshine in December 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 Glendon. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Glendon in December?
What is the most humid month in Glendon?
What is the average humidity in December in Glendon?
How many days does it rain in December in Glendon?
How much does it snow in Glendon in December?
What is the month with the shortest days in Glendon?
What is the average length of the day in December in Glendon?
When are sunrise and sunset in December in Glendon?
How many hours of sunshine does Glendon have in December?
What is the month with the lowest UV index in Glendon?
How high is the UV index in December in Glendon?
Average temperature in December
Glendon, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Glendon, 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
Glendon, 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 (4.9mph).
Average humidity in December
Glendon, PA
- Average humidity in December: 81%
The months with the highest relative humidity are February, October and December (81%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in December
Glendon, PA
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Glendon, PA
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Glendon, PA
- Average snowfall in December: 2.2"
The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glendon, PA
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glendon, 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 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Glendon, PA
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in December
Glendon, PA
- Average UV index in December: 2
The months with the highest UV index are June and July (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
Glendon, 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 34).
Average visibility in December
Glendon, PA
- Average visibility in December: 5mi
The months with the highest visibility are March, April and November (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September, October and December (5mi).
Glendon, Pennsylvania, USA
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