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
The onset of December entails a temperature shift, as the average high-temperature decreases from a frosty 49.6°F (9.8°C) in November to a wintry 40.1°F (4.5°C). Throughout December in Belle Vernon, a steady low-temperature average of 28.8°F (-1.8°C) is noted.Humidity
In December, the average relative humidity is 83%.Rainfall
In December, in Belle Vernon, the rain falls for 14 days. Throughout December, 3.07" (78mm) of precipitation is accumulated. Throughout the year, in Belle Vernon, there are 191.3 rainfall days, and 35.24" (895mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Belle Vernon, in December, during 12.6 snowfall days, 4.88" (124mm) of snow is typically accumulated. In Belle Vernon, during the entire year, snow falls for 60.2 days and aggregates up to 25.08" (637mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Belle Vernon, Pennsylvania.On the first day of December in Belle Vernon, sunrise is at 7:23 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine in Belle Vernon is 3.6h.UV index
December is the month with the lowest UV index in Belle Vernon, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Boost your sun resistance with garments that are densely woven yet spacious. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
Is December cold in Belle Vernon?
What is the average humidity in December in Belle Vernon?
How many days does it rain in December in Belle Vernon?
How many days does it snow in December in Belle Vernon?
What is the month with the shortest days in Belle Vernon?
How many hours of daylight does Belle Vernon have in December?
What time are sunrise and sunset in December in Belle Vernon?
How many hours of sunshine does Belle Vernon have in December?
What is the month with the lowest UV index in Belle Vernon?
How high is the UV index in December in Belle Vernon?
Average temperature in December
Belle Vernon, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Belle Vernon, 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
Belle Vernon, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Belle Vernon, PA
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Belle Vernon, PA
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in December
Belle Vernon, PA
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is May (21.8 days).
The months with the least rainy days are January and February (11.7 days).
Average snowfall in December
Belle Vernon, PA
- Average snowfall in December: 4.88"
The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Belle Vernon, PA
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Belle Vernon, PA
- 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 4min
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
Belle Vernon, PA
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is November (14.3 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in December
Belle Vernon, PA
- 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
Belle Vernon, 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
Belle Vernon, 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 and February (4mi).
Belle Vernon, Pennsylvania, USA
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