Philadelphia Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Philadelphia, Pennsylvania during each month of the year.
The average high and low temperatures are listed below monthly and annually for Philadelphia, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 70, 80 or 90 °F each month in Philadelphia, scroll down farther. There are also monthly and yearly counts of days with cold weather.
All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.
|High °F||Low °F||High °C||Low °C|
Days of Hot Weather in Philadelphia
The temperature at Philadelphia climbs into the 90s Fahrenheit for 24 days a year on average, scattered throughout late spring and summer. About once every two or three years, the thermometer here reaches 100 °F (38 °C). A day of 100-degree weather can show up in July or August.
How Often Philadelphia Has Cold Temperatures
The coldest nights of winter at Philadelphia drop down to 10 °F (-12 °C) or below. About once in five years the city gets as cold as 0 °F (-18 °C).
From December to March, Philadelphia can remain below freezing all day long. The city typically has 13 days a year when the temperature never rises above 32 °F.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.