When planning a visit to Pennsylvania in the United States of America, it helps to know that temperatures typically range from 5°C (41°F) in January up to 31°C (88°F) during the peak of July. Our detailed climate overview is based on data from Philadelphia, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
Pennsylvania offers pleasant conditions in May, September and October, with temperatures typically ranging from 20°C (68°F) to 26°C (79°F).
The cooler season is during the months of January, February and December.
When it comes to rainfall, Pennsylvania experiences moderate variations in precipitation across the seasons. You can expect around 131 mm (5.2 in) of rain in August, dropping to 77 mm (3 in) in November.
Visitors hoping to maximize their time in the sun should consider planning their trip for July, when daylight hours are at their peak.
