Southeastern Pennsylvania's climate is temperate. Summers are generally humid, with temperatures in July averaging 83 degrees (F) for a high and 60 degrees for a low. Occasional high temperatures reach the mid-90s with showers and thunderstorms commonly occurring during spring and summer months.
Winters can be cold, with temperatures in January averaging 38 degrees (F) for a high and 20 degrees for a low. Temperatures occasionally reach as low as the single digits.
Did You Know?
Charcoal, sometimes still smoldering from its recent manufacture, was first placed under the "Cooling Shed" and allowed to lower in temperature before being shoveled into the "Charcoal House". This helped guard against accidental fire that could consume all of Hopewell Furnace's fuel.