Philadelphia in October typically experiences a transition from the warmth of summer to the crispness of autumn. Average high temperatures gradually decrease from the low 70s Fahrenheit (low 20s Celsius) at the beginning of the month to the mid-60s Fahrenheit (high teens Celsius) by the end. Correspondingly, average low temperatures shift from the low 50s Fahrenheit (low 10s Celsius) to the mid-40s Fahrenheit (around 7 Celsius). Rainfall remains relatively consistent with other months, averaging around 3 inches.
Understanding typical climatic conditions during this period is valuable for a variety of reasons. Pleasant temperatures make October an ideal time for outdoor activities, from exploring the city’s historical landmarks to enjoying the vibrant fall foliage in nearby parks. This information is also crucial for planning events, travel, and choosing appropriate attire. Historically, this time of year has marked the transition to harvest season, influencing local traditions and celebrations.