Philadelphia
The tables below display average monthly climate and weather indicators in Philadelphia Pennsylvania.
Temperature by: Fahrenheit / Centigrade
| Philadelphia Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Avg. Temperature | -0.9 | 0.6 | 5.8 | 11.3 | 17.2 | 22.1 | 24.8 | 24.2 | 20.1 | 13.6 | 8.0 | 2.1 | 12.4 |
| Avg. Max Temperature | 3.3 | 5.0 | 10.9 | 17.0 | 22.8 | 27.6 | 30.1 | 29.2 | 25.3 | 19.1 | 12.8 | 6.3 | 17.4 |
| Avg. Min Temperature | -5.1 | -4.0 | 0.7 | 5.6 | 11.5 | 16.6 | 19.6 | 19.1 | 14.8 | 8.0 | 3.1 | -2.2 | 7.3 |
| Days with Max Temp of 32 C or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | 1.0 | 5.0 | 9.0 | 6.0 | 2.0 | 0.0 | 0.0 | 0.0 | 23.0 |
| Days with Min Temp Below Freezing | 25.0 | 22.0 | 14.0 | 2.0 | < 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 8.0 | 20.0 | 93.0 |
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| Philadelphia Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Heating Degree Days | 1073 | 896 | 701 | 378 | 123 | 5.0 | 0.0 | 0.0 | 32.0 | 283 | 558 | 905 | 4954 |
| Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 58.0 | 209 | 363 | 326 | 128 | 17.0 | 0.0 | 0.0 | 1101 |
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| Philadelphia Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Precipitation (inches) | 3.2 | 2.8 | 3.5 | 3.6 | 3.8 | 3.7 | 4.3 | 3.8 | 3.4 | 2.6 | 3.3 | 3.4 | 41.4 |
| Days with Precipitation 0.01 inch or More | 11.0 | 9.0 | 11.0 | 11.0 | 11.0 | 10.0 | 9.0 | 9.0 | 8.0 | 8.0 | 9.0 | 10.0 | 117 |
| Monthly Snowfall (inches) | 6.0 | 6.6 | 3.6 | 0.3 | < 0.05 | < 0.05 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 3.2 | 20.4 |
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| Other Philadelphia Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed | 10.3 | 10.9 | 11.3 | 10.8 | 9.5 | 8.8 | 8.2 | 8.0 | 8.3 | 8.8 | 9.6 | 10.0 | 9.5 |
| Clear Days | 7.0 | 7.0 | 8.0 | 7.0 | 6.0 | 7.0 | 7.0 | 8.0 | 10.0 | 11.0 | 7.0 | 7.0 | 93.0 |
| Partly Cloudy Days | 8.0 | 7.0 | 8.0 | 9.0 | 11.0 | 11.0 | 12.0 | 11.0 | 9.0 | 9.0 | 9.0 | 8.0 | 112 |
| Cloudy Days | 16.0 | 14.0 | 15.0 | 14.0 | 14.0 | 12.0 | 12.0 | 11.0 | 11.0 | 12.0 | 14.0 | 15.0 | 160 |
| Percent of Possible Sunshine | 49.0 | 53.0 | 55.0 | 56.0 | 57.0 | 62.0 | 61.0 | 62.0 | 59.0 | 60.0 | 52.0 | 49.0 | 56.0 |
| Avg. Relative Humidity | 56.0 | 65.5 | 63.5 | 62.0 | 62.0 | 65.0 | 66.0 | 67.5 | 68.5 | 69.5 | 66.0 | 65.0 | 67.5 |
Weather information for other cities in Pennsylvania