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
Observing a mild shift, the average high-temperature during December reduces from November's frosty 48.4°F (9.1°C) to a wintry 38.5°F (3.6°C). The low-temperature averages to a freezing cold 26.8°F (-2.9°C) during the nights of December.Humidity
The months with the highest humidity in Bartonsville are February, October and December, with an average relative humidity of 82%.Rainfall
In Bartonsville, in December, it is raining for 11.9 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, there are 161.8 rainfall days, and 32.24" (819mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 7.5 days. Throughout December, 3.58" (91mm) of snow is accumulated. In Bartonsville, during the entire year, snow falls for 38.6 days and aggregates up to 19.76" (502mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:42 pm EST.
Sunshine
In December, the average sunshine is 4.4h.UV index
The month with the lowest UV index in Bartonsville is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What are the most humid months in Bartonsville?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Bartonsville?
How many hours of daylight does Bartonsville have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Bartonsville, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Bartonsville, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Bartonsville, PA
- Average wind speed in December: 7.4mph
The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Bartonsville, PA
- Average humidity in December: 82%
The months with the highest relative humidity are February, October and December (82%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in December
Bartonsville, PA
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Bartonsville, PA
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Bartonsville, PA
- Average snowfall in December: 3.58"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bartonsville, PA
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bartonsville, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Bartonsville, PA
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is April (11.1 days).
Average UV index in December
Bartonsville, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Bartonsville, PA
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Bartonsville, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Bartonsville, Pennsylvania, USA
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