In October, Philadelphia typically sees daytime highs of 19.5°C and overnight lows around 7.2°C. Compared to the annual average high of 17.9°C, October runs +1.6°C.
October in Philadelphia averages a daytime high of 19.5°C and an overnight low of 7.2°C.
October runs +1.6°C compared to Philadelphia's annual average high of 17.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 19.5°C and cooler evenings around 7.2°C.