Philadelphia

What is the climate like in Philadelphia?

The best time to visit Philadelphia is typically September – November, with trip comfort peaking in October (7.5/10). Philadelphia is warmest in July, when daily highs average 91°F (33°C), and coolest in January, when lows fall to about 39°F (4°C). The wettest month is typically March and the driest is October; the year sees roughly 54 in (1376 mm) of precipitation.

• Best time to visitSeptember – November — comfort peaks in October (7.5/10)
• Warmest monthJuly — average high 91°F (33°C)
• Coolest monthJanuary — average low 39°F (4°C)
• Wettest monthMarch (6.0 in (152 mm))
• Driest monthOctober (2.7 in (68 mm))
• Annual precipitation54 in (1376 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromPhila 1 Wsw, 1 km away (1949-2023)