December weather forecastBentleyville, PA
December
Weather in December
December, the first month of the winter in Bentleyville, is still a cold month, with an average temperature varying between 28.9°F (-1.7°C) and 40.1°F (4.5°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, from a chilly 49.8°F (9.9°C) to an icy 40.1°F (4.5°C). Bentleyville's average low-temperature during December nights is observed to be a subzero cold 28.9°F (-1.7°C).Humidity
The average relative humidity in December is 83%.Rainfall
In Bentleyville, during December, the rain falls for 11.9 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 170.8 rainfall days, and 25.2" (640mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Bentleyville, in December, snow falls for 11.6 days, with typically accumulated 2.8" (71mm) of snow. Throughout the year, in Bentleyville, there are 54.5 snowfall days, and 14.41" (366mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:04 pm EST.
Sunshine
The average sunshine in December is 3.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bentleyville, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Bentleyville, PA
- 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
Bentleyville, PA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Bentleyville, PA
- 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, July and August (76%).
Average rainfall in December
Bentleyville, PA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is November (1.54").
Average rainfall days in December
Bentleyville, PA
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Bentleyville, PA
- Average snowfall in December: 2.8"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Bentleyville, PA
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (16.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bentleyville, PA
- Average daylight in December: 9h and 24min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Bentleyville, PA
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in December
Bentleyville, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (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
Bentleyville, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Bentleyville, PA
- Average visibility in December: 5mi
The months with the highest visibility are April, August and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, September, October and December (5mi).
