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 the transition to December, Black Lick observes a drop in the average high-temperature, moving from a frosty 47.8°F (8.8°C) in November to a cold 38.3°F (3.5°C). Throughout December, Black Lick witnesses a nighttime temperature average of 27°F (-2.8°C).Humidity
The average relative humidity in December is 85%.Rainfall
In Black Lick, Pennsylvania, in December, during 12.5 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. In Black Lick, during the entire year, the rain falls for 183.4 days and collects up to 33.5" (851mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Black Lick, in December, during 13.5 snowfall days, 6.22" (158mm) of snow is typically accumulated. Throughout the year, there are 64.7 snowfall days, and 29.06" (738mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December in Black Lick, sunrise is at 7:21 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:00 pm EST.
Sunshine
The average sunshine in December is 3.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. When the Sun is at its strongest around midday, find shade and limit exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
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?
What is the average length of the day in December in Black Lick?
When 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 intensity in December?
Average temperature in December
Black Lick, PA
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
Black Lick, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Black Lick, PA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Black Lick, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in December
Black Lick, PA
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in December
Black Lick, PA
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in December
Black Lick, PA
- Average snowfall in December: 6.22"
The month with the highest snowfall is January (7.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Black Lick, PA
- Average snowfall days in December: 13.5 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
Black Lick, 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 18min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Black Lick, PA
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is January (6.1 days).
Average UV index in December
Black Lick, PA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Black Lick, PA
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Black Lick, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Black Lick, Pennsylvania, USA
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