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Like all mountainous states, the four seasons differ in intensity based on your location.
Pennsylvania summers are long, and bring hot and humid conditions to the southeast, while in the mountains (central, northeast and west) the days are generally cooler, but still on the humid side. 
Fall is pleasant throughout the state, while winter bring snow and much colder temperatures, especially in the mountains. 
Overall, January is the coldest month, with average high temperatures in the mid-20s. July is the warmest month, with average high temperatures near 80 degrees. 
Summer temps in the 90s are not uncommon in the southeast, and the far southwestern (Pittsburgh area). 
Annual precipitation averages near 45 inches in the southeast and in the mountains, while lower amounts are common near its north-central border with New York State.. 

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