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 Bethlehem, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 49.3°F (9.6°C) to a cold 39.9°F (4.4°C). In the month of December, the nighttime temperature in Bethlehem dips to a steady average of 28°F (-2.2°C).Humidity
In December, the average relative humidity in Bethlehem is 83%.Rainfall
In December, in Bethlehem, West Virginia, the rain falls for 11.7 days. Throughout December, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Bethlehem, there are 166.3 rainfall days, and 25.94" (659mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Bethlehem, in December, snow falls for 10.5 days, with typically accumulated 2.6" (66mm) of snow. In Bethlehem, during the entire year, snow falls for 50.4 days and aggregates up to 14.06" (357mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Bethlehem, West Virginia, sunrise is at 7:26 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:07 pm EST.
Sunshine
In Bethlehem, the average sunshine in December is 3.5h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Bethlehem. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
Is December cold in Bethlehem?
What is the average humidity in December in Bethlehem?
How many days does it rain in December in Bethlehem?
How much does it snow in Bethlehem in December?
What is the month with the shortest days in Bethlehem?
What is the average length of the day in December in Bethlehem?
What time are sunrise and sunset in December in Bethlehem?
How long on average sun shines in December in Bethlehem?
What is the month with the lowest UV index in Bethlehem?
What is the UV index intensity in December in Bethlehem?
Average temperature in December
Bethlehem, WV
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Bethlehem, WV
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Bethlehem, WV
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in December
Bethlehem, WV
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are April and August (77%).
Average rainfall in December
Bethlehem, WV
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in December
Bethlehem, WV
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Bethlehem, WV
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Bethlehem, WV
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (14.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bethlehem, WV
- 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: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Bethlehem, WV
- Average sunshine days in December: 11.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Bethlehem, WV
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Bethlehem, WV
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Bethlehem, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
Bethlehem, West Virginia, USA
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