Philadelphia, PA
Climate overview — based on NOAA 1991-2020 normals from PHILA FRANKLIN INST, PA US.
Year-round temperatures (°F)
Climate summary
Philadelphia has an annual average temperature of 57.7°F with about 50.7 inches of precipitation per year and 16.1 inches of snow. The warmest month is July (average high 89.3°F), and the coldest is January (average low 27.8°F). August is typically the wettest month (4.95 in) and February the driest (3.34 in). Snow typically falls from December through March.
Best time to visit Philadelphia
Full guide →Climate change signal
All-time records →133 of 366 (36.3%) of Philadelphia's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1990s | 67 | |
| 2000s | 127 | |
| 2010s | 102 | |
| 2020s | 70 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 41.6°F | 27.8°F | 34.7°F | 3.61 in | 6.4 in | 11 |
| February | 44.9°F | 29.6°F | 37.2°F | 3.34 in | 4.0 in | 9 |
| March | 53.5°F | 36.4°F | 44.9°F | 4.54 in | 2.0 in | 10 |
| April | 65.9°F | 46.3°F | 56.1°F | 4.00 in | 0.1 in | 12 |
| May | 75.7°F | 56.3°F | 66.0°F | 4.06 in | — | 12 |
| June | 84.9°F | 65.9°F | 75.4°F | 4.77 in | — | 11 |
| July | 89.3°F | 71.4°F | 80.4°F | 4.75 in | — | 10 |
| August | 87.2°F | 69.5°F | 78.3°F | 4.95 in | — | 10 |
| September | 80.3°F | 62.7°F | 71.5°F | 4.88 in | — | 9 |
| October | 68.1°F | 51.1°F | 59.6°F | 4.15 in | — | 9 |
| November | 56.4°F | 41.3°F | 48.9°F | 3.37 in | 0.1 in | 9 |
| December | 46.5°F | 33.2°F | 39.9°F | 4.27 in | 3.5 in | 11 |
Climate twins of Philadelphia
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).