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 decreases from a chilly 46.2°F (7.9°C) in November to an icy 36.9°F (2.7°C). December witnesses an average nighttime temperature of 25.9°F (-3.4°C) in Llewellyn Corners.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
In Llewellyn Corners, in December, during 11.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, in Llewellyn Corners, there are 142.7 rainfall days, and 13.19" (335mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Llewellyn Corners, Pennsylvania, in December, during 10 snowfall days, 1.93" (49mm) of snow is typically accumulated. Throughout the year, in Llewellyn Corners, there are 49.9 snowfall days, and 9.92" (252mm) of snow is accumulated.Daylight
The month with the shortest days in Llewellyn Corners is December, with an average of 9h and 18min of daylight.On the first day of December in Llewellyn Corners, Pennsylvania, sunrise is at 7:09 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:44 pm EST.
Sunshine
The average sunshine in December is 3.9h.UV index
The month with the lowest UV index in Llewellyn Corners is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold is December in Llewellyn Corners?
What is the most humid month in Llewellyn Corners?
What is the average humidity in December in Llewellyn Corners?
How many days does it rain in December in Llewellyn Corners?
How much does it snow in Llewellyn Corners in December?
What is the month with the shortest days in Llewellyn Corners?
What is the average length of the day in December in Llewellyn Corners?
When is the sunrise / sunset in December in Llewellyn Corners?
How long on average sun shines in December in Llewellyn Corners?
What is the month with the lowest UV index in Llewellyn Corners?
How high is the UV index in December in Llewellyn Corners?
Average temperature in December
Llewellyn Corners, PA
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Llewellyn Corners, 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
Llewellyn Corners, PA
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Llewellyn Corners, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Llewellyn Corners, PA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is July (1.5").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
Llewellyn Corners, PA
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Llewellyn Corners, PA
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Llewellyn Corners, PA
- Average snowfall days in December: 10 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Llewellyn Corners, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).
Average sunshine days in December
Llewellyn Corners, PA
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in December
Llewellyn Corners, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Llewellyn Corners, PA
- Average cloud cover in December: 60
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Llewellyn Corners, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Llewellyn Corners, Pennsylvania, USA
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