Pennsylvania has four seasons; spring, summer, fall, and winter.  The warmest months are July and August.  These months are hot and humid with average high temperatures ranging from the low 80's F in the mountains to the high 80's F in the southeast around Philadelphia.  It is not uncommon to reach temperatures above 90 F during the summer months.  The coldest months are January and February with high temperatures ranging from low 30's F in the mountains to high 30's F in the southeast around Philadelphia. 

Tips when visiting

1.  When visiting areas outside of the Philadelphia area in the summer,  bring a light jacket because nights can be cool.

2.  Best months for winter activities are December, January, and February.  Most ski resorts will make snow in the months of November, March, and even sometimes April as long as it is cold enough. 

3.  Best times for fall foliage are late September through October.  Peak times will vary depending on the weather that year and part of the state with the southeast peaking later than the north and west.

4.  March and April are usually wet months.  The saying goes April showers bring May flowers.

5.  Spring flowers peak in the May.

6.  If you enjoy outdoor activities but don't like the heat and humidity,  visit during the months of April, May, September, and October.