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
With the onset of December, Gwynedd Heights experiences a modest temperature adjustment, with the average high-temperature receding from a cool 51.3°F (10.7°C) in November to a cold 42.1°F (5.6°C). The nighttime temperature, during December, averages of 30.7°F (-0.7°C).Humidity
February, October and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In December, the rain falls for 7.3 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. In Gwynedd Heights, Pennsylvania, during the entire year, the rain falls for 116.6 days and collects up to 10.63" (270mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Gwynedd Heights, Pennsylvania. In December, it is snowing for 1.8 days. Throughout December, 0.43" (11mm) of snow is accumulated. Throughout the year, in Gwynedd Heights, there are 14.8 snowfall days, and 3.5" (89mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Gwynedd Heights.On the first day of the month, sunrise is at 7:04 am and sunset at 4:35 pm. On the last day of December, in Gwynedd Heights, Pennsylvania, sunrise is at 7:23 am and sunset at 4:45 pm EST.
Sunshine
In December, the average sunshine in Gwynedd Heights is 5h.UV index
The months with the lowest UV index in Gwynedd Heights are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 in December translates into these instructions:
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. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
How cold does it get in Gwynedd Heights in December?
What are the most humid months in Gwynedd Heights?
What is the average humidity in December in Gwynedd Heights?
How much does it rain in Gwynedd Heights in December?
How many days does it snow in December in Gwynedd Heights?
What is the month with the shortest days in Gwynedd Heights?
How many hours of daylight does Gwynedd Heights have in December?
When is the sunrise / sunset in December in Gwynedd Heights?
How many hours of sunshine does Gwynedd Heights have in December?
What is the month with the lowest UV index in Gwynedd Heights?
What is the UV index intensity in December in Gwynedd Heights?
Average temperature in December
Gwynedd Heights, PA
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in December
Gwynedd Heights, 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
Gwynedd Heights, PA
- Average wind speed in December: 7.5mph
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
Gwynedd Heights, PA
- Average humidity in December: 79%
The months with the highest relative humidity are February, October and December (79%).
The months with the lowest relative humidity are April, July and August (73%).
Average rainfall in December
Gwynedd Heights, PA
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days in December
Gwynedd Heights, PA
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is July (13.8 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in December
Gwynedd Heights, PA
- Average snowfall in December: 0.43"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Gwynedd Heights, PA
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is January (4.6 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
Gwynedd Heights, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Gwynedd Heights, PA
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (13.9 days).
Average UV index in December
Gwynedd Heights, 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
Gwynedd Heights, PA
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Gwynedd Heights, 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).
Gwynedd Heights, Pennsylvania, USA
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