Philadelphia (PA) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Philadelphia

Philadelphia average temperature chart (Celsius) Philadelphia average temperature chart (Fahrenheit)
Average monthly temperatures in Philadelphia (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.5 5.4 11.2 17.1 23 27.7 30 29 25.2 19 12.8 6.5
°F 38.4 41.7 52.1 62.7 73.3 81.8 86 84.3 77.4 66.1 55 43.7

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Philadelphia monthly rainfall chart (mm) Philadelphia monthly rainfall chart (inches)
Average monthly rainfall in Philadelphia (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 85 74 93 96 101 95 115 114 91 77 89 90
inches 3.3 2.9 3.7 3.8 4 3.7 4.5 4.5 3.6 3 3.5 3.6
Rainy days 10 10 10 11 11 10 9 9 8 7 10 11

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Philadelphia

Philadelphia average daily sunshine chart
Average daily sunshine Philadelphia
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.6 6.1 7.1 7.9 8.5 9.6 9.5 9 7.9 7.1 5.6 5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Philadelphia average minimum / maximum temperatures (Celsius) Philadelphia average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Philadelphia (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.4 -4.2 0.4 5.1 10.8 15.9 18.8 18.1 13.9 7.4 2.8 -2.5
Max °C 3.8 5.6 11.5 17.4 23.3 28 30.3 29.3 25.5 19.3 13.1 6.7
Min °F 22.4 24.4 32.6 41.1 51.4 60.5 65.8 64.6 57 45.2 37 27.5
Max °F 30.6 33.3 42.6 52.2 62.6 71.4 76.1 74.7 67.5 55.9 46.2 35.8

Sea temperature

The graph below shows the average sea temperature.

Philadelphia average sea temperature chart (Celsius) Philadelphia average sea temperature chart (Fahrenheit)
Average sea temperature around Philadelphia in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.9 0.8 1.4 4.7 10 16.4 21.9 23.4 21.3 16.6 11.3 6.5
°F 37.2 33.5 34.5 40.4 49.9 61.6 71.5 74.2 70.3 61.9 52.3 43.8

Wind speed

The graph below shows the average wind speed.

Philadelphia average winspeed by month (km/h) Philadelphia average winspeed by month (mph)
Average wind speed in Philadelphia (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 18 19 19 17 15 14 14 14 15 17 17
mph 11 11 12 12 10 9 9 9 9 9 11 11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Philadelphia relative humidity averages
Average relative humidity in Philadelphia
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 65% 63% 61% 66% 69% 70% 71% 73% 71% 69% 69%
Philadelphia

Other monthly averages

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Philadelphia weather stats

Philadelphia weather statistics
Hottest month: July 30°C 86°F
Driest month: February 74mm 2.9ins
Sunniest month: August 9hrs
Coldest month: January 3.5°C 38.3°F
Wettest month: July 115mm 4.5ins
Warmest sea: August 23.4°C 74.1°F
Map showing location of Philadelphia (39.95234, -75.16379)

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