Climate and Weather of Pennsylvania, the United States of America

In the United States of America you have several regions, one of which is called Pennsylvania. The most popular city in this region is Philadelphia, whose climate data we'll examine to provide you with an overview of what weather to expect in Pennsylvania. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Pennsylvania, the months of May, September and October bring pleasant weather, with average temperatures ranging between 20°C and 26°C.

Note that the warmest month in Pennsylvania is normally July, with the temperature reaching 31°C, while January has the coolest maximum daytime temperatures, reaching 5°C.

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 of rain in August, dropping to 77 mm 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.

Select a Month of Interest

Check the conditions for any month of the year.

Interested in the detailed Weather and Climate of Pennsylvania, the United States of America?

Please select a city below the map you wish to travel to, or the one closest to your destination. Each selected city will show you the following graphs:
1. Average minimum and maximum temperature over the year
2. Average monthly precipitation over the year (rainfall, snow)
3. Average monthly hours of sunshine over the year
On certain pages we also offer other historical climate data like humidity wind speed and water temperature.