Weather In Chester County PA

The Weather In Chester County Pennsylvania

The summers in Chester County are warm and humid most of the time. High temperature and humidity levels of around 80-degrees are reported in the daytime while it reduces to 60-degrees at nighttime. The maritime influence in the region tends to produce a relatively uniform weather pattern in the area. This can result in a prolonged hot and humid periods during the summer season. During the July-August months, summer temperatures would reach 90-degrees and temperatures would rarely go below 45-degrees during this time. This article provides an overview of the weather patterns in Chester County Pennsylvania.
Cloud cover is at its minimum during the summer period. In fact, more than 60% of the available sunshine is received when the nights are clear. The prevailing winds usually flow from the south to southwest at an average speed of eight miles per hour. There is adequate rainfall during the summer season. For the most part, showers will accompany thunder which is observed on an average of 22 days. Cloudiness will persist to a much greater extent during the winter.

During this time, the winds will flow from the west to northwest averaging 10-12 miles per hour. Daytime temperatures range between 25-30-degrees during January accompanied by nighttime lows of 20 degrees. The average winter period averages 126 days with low temperatures that are subfreezing in the area. In fact, 21 winter days will not make it to the freezing mark. There was only one day in recorded history where the temperature in the area stayed below zero degrees all day long. This day has been registered on January 19, 1994. In fact, the highest temperature for the day was recorded as just -1-degrees. The county had not experienced a zero-degree temperature until January 24, 2011, after that. The county averaged a 2-day below zero winter temperature over the past 121 years.

The first snowfall usually occurs in early November each year. But snow is more likely in December. In fact, there is only a thirty-five percent chance of experiencing a White Christmas in the County each year. During the normal winter, there are at least two snowstorms that exceed six inches. In fact, the largest individual snowstorm was recorded for three days which exceeded 53-inches. This ended on February 14, 1899. The greatest snow depth recorded in the county is 69.8-inches on February 15, 1899.

The snow cover will not persist for a great length of time usually. An inch or more snow is observed on an average of 31 days per year. Six inches of snow are followed for an average of 6 days annually. The longest period of snow cover (over an inch) was recorded for more than sixty-three days from December 9, 1995, to February 9, 1996. The Chester County web design company recorded 20 inches of snow in Coatesville.
In conclusion, Chester County has a varying weather pattern throughout the year. There is the hot and humid summer period as well as the cold winter season. The article above provides a comprehensive overview of the different weather patterns in Chester County Pennsylvania in the United States.