According to the
Trewartha climate classification system, Big Pocono State Park has a Temperate
Continental climate (
Dc) with warm summers (
b), cold winters (
o) and year-around precipitation (
Dcbo).
Dcbo climates are characterized by at least one month having an average mean temperature ≤ , four to seven months with an average mean temperature ≥ , all months with an average mean temperature . Since 1981, the highest air temperature was on July 22, 2011, and the highest daily average mean
dew point was on January 8, 2006. July is the peak month for
thunderstorm activity which correlates with the average warmest month of the year. The average wettest month is September which correlates with tropical storm remnants during the peak of the
Atlantic hurricane season. Since 1981, the wettest calendar day was on September 30, 2010. During the winter months, the
plant hardiness zone is 6a with an average annual extreme minimum air temperature of . Since 1981, the coldest air temperature was on January 21, 1994. Episodes of extreme cold and wind can occur with
wind chill values < . The average snowiest month is January which correlates with the average coldest month of the year.
Ice storms and large snowstorms depositing ≥ of snow occur nearly every year, particularly during
nor’easters from December through March. {{Weather box ==Ecology==