This report describes the typical weather at the Pocono Mountains Municipal Airport (Mount Pocono, Pennsylvania, United States) weather station over the course of an average December. It is based on the historical records from 2001 to 2012. Earlier records are either unavailable or unreliable.
Mount Pocono, Pennsylvania has a humid continental climate with hot summers and no dry season. The area within 25 mi of this station is covered by forests (94%).
The month of December is characterized by falling daily high temperatures, with daily highs ranging from 39°F to 34°F over the course of the month, exceeding 52°F or dropping below 24°F only one day in ten.
Over the course of December, the length of the day is essentially constant. The shortest day of the month is December 21 with 9:11 hours of daylight; the longest day is December 1 with 9:25 hours of daylight.
The earliest sunrise is at 7:08am on December 1; the latest sunset is at 4:43pm on December 31; the latest sunrise is at 7:27am on December 30; the earliest sunset is at 4:32pm on December 8.
Daylight savings time is observed in 2012 but it neither starts nor ends in December, so the entire month is in standard time.
The median cloud cover ranges from 73% (partly cloudy) to 82% (mostly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 6% from the start to the end of the month.
On December 16, a representative day, the sky is clear or mostly clear 32% of the time, partly cloudy 5% of the time, and mostly cloudy or overcast 57% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around December 31, occurring in 64% of days. Precipitation is least likely around December 1, occurring in 54% of days.
Throughout December, the most common forms of precipitation are light snow, moderate snow, and light rain.
Light snow is the most severe precipitation observed during 40% of those days with precipitation. It is most likely around December 31, when it is observed during 28% of all days.
Moderate snow is the most severe precipitation observed during 34% of those days with precipitation. It is most likely around December 30, when it is observed during 25% of all days.
Light rain is the most severe precipitation observed during 11% of those days with precipitation. It is most likely around December 1, when it is observed during 10% of all days.
The likelihood of snow falling is highest around December 31, occurring in 54% of days.
Either snow rarely accumulates at this location in December or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 58% (mildly humid) to 90% (very humid) over the course of a typical December, rarely dropping below 40% (comfortable) and reaching as high as 99% (very humid).
The air is driest around December 12, at which time the relative humidity drops below 67% (mildly humid) three days out of four; it is most humid around December 3, rising above 86% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical December, the dew point typically varies from 14°F (dry) to 31°F (dry) and is rarely below 1°F (dry) or above 45°F (dry).
Over the course of December typical wind speeds vary from 2 mph to 17 mph (light air to moderate breeze), rarely exceeding 24 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around December 24, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around December 1, at which time the average daily maximum wind speed is 15 mph (moderate breeze).