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
Allentown's December weather shows a moderate shift in high-temperatures, falling from November's cool 52.3°F (11.3°C) to a chilly 43.2°F (6.2°C). An average low-temperature of 31.6°F (-0.2°C) marks the nights throughout December.Humidity
In Allentown, the average relative humidity in December is 81%.Rainfall
In Allentown, during December, the rain falls for 13.6 days and regularly aggregates up to 3.27" (83mm) of precipitation. In Allentown, during the entire year, the rain falls for 186.1 days and collects up to 36.3" (922mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Allentown, in December, snow falls for 10.1 days, with typically accumulated 3.86" (98mm) of snow. In Allentown, during the entire year, snow falls for 46.8 days and aggregates up to 20.04" (509mm) of snow.Daylight
December has the shortest days of the year in Allentown, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:25 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:14 pm EST.
Sunshine
In December, the average sunshine is 4h.UV index
The months with the lowest UV index in Allentown are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Allentown in December?
What is the average humidity in December in Allentown?
How much does it rain in Allentown in December?
How much does it snow in Allentown in December?
What is the month with the shortest days in Allentown?
What is the average length of the day in December in Allentown?
When are sunrise and sunset in December in Allentown?
How long on average sun shines in December in Allentown?
What is the month with the lowest UV index in Allentown?
What is the UV index intensity in December in Allentown?
Average temperature in December
Allentown, WV
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 31.6°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Allentown, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Allentown, WV
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Allentown, WV
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are June and August (76%).
Average rainfall in December
Allentown, WV
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Allentown, WV
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is November (11.5 days).
Average snowfall in December
Allentown, WV
- Average snowfall in December: 3.86"
The month with the highest snowfall is January (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Allentown, WV
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Allentown, WV
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Allentown, WV
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (7.9 days).
Average UV index in December
Allentown, WV
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Allentown, WV
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Allentown, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The month with the lowest visibility is January (4mi).
Allentown, West Virginia, USA
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