In April, Philadelphia typically sees daytime highs of 17.6°C and overnight lows around 5.0°C. Compared to the annual average high of 17.9°C, April runs -0.3°C.
April in Philadelphia averages a daytime high of 17.6°C and an overnight low of 5.0°C.
April runs -0.3°C compared to Philadelphia's annual average high of 17.9°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 17.6°C and cooler evenings around 5.0°C.