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, entering December brings a temperature decrement, reducing from November's frosty 49.3°F (9.6°C) to a wintry 39.9°F (4.4°C). The average temperature during December nights dips to a freezing cold 28°F (-2.2°C).Humidity
In Bethlehem, the average relative humidity in December is 83%.Rainfall
In Bethlehem, in December, during 11.7 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Bethlehem, during the entire year, the rain falls for 166.3 days and collects up to 25.94" (659mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Bethlehem, during December, snow falls for 10.5 days and regularly aggregates up to 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
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:26 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:44 am and sunset at 5:07 pm EST.
Sunshine
The average sunshine in December is 3.5h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 1 in December translates into 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. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
How much does it rain in Bethlehem in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Bethlehem have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index 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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