Philadelphia Average Temperature by Month

This page shows the average temperature in each month of the year in Philadelphia, Pennsylvania. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Philadelphia?
In Philadelphia, Pennsylvania, the warmest month is July, with an average daily high temperature of 87.8 °F and an average low of 70.4 °F.
What's the Coldest Month in Philadelphia?
In Philadelphia, Pennsylvania, the coolest month is January, with an average daily high temperature of 41.3 °F and an average low of 26.8 °F.
Month Avg. High Avg. Low
January 41.3 °F 26.8 °F
February 44.3 °F 28.3 °F
March 52.7 °F 35.1 °F
April 64.7 °F 45.0 °F
May 74.3 °F 55.0 °F
June 83.1 °F 64.7 °F
July 87.8 °F 70.4 °F
August 85.7 °F 68.8 °F
September 78.8 °F 61.7 °F
October 67.1 °F 50.0 °F
November 55.9 °F 39.6 °F
December 46.0 °F 31.9 °F
Year 65.2 °F 48.2 °F
Weather Station Details
Years Station Coordinates
1941–2024 Philadelphia International Airport location
1916–1940 Philadelphia Naval Yard location
1894–1915 Drexel University location