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Best time to visit · Pennsylvania, United States
For the most comfortable weather in Philadelphia, aim for April & May and September & October. October tops our comfort score at 84/100, with highs around 67°F (19°C) and 4.3 in (110 mm) of rain. June – August and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
These averages also cover Broad Street & South Philly and Center City & Penn's Landing.
Highs run from 38°F to 86°F across the year, and the yearly total is about 48.3 in (1228 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 38°F4°C | 41°F5°C | 50°F10°C | 63°F17°C | 72°F22°C | 81°F27°C | 86°F30°C | 85°F30°C | 79°F26°C | 67°F19°C | 55°F13°C | 44°F7°C |
| Avg low | 23°F-5°C | 24°F-4°C | 31°F-1°C | 41°F5°C | 52°F11°C | 62°F17°C | 67°F20°C | 66°F19°C | 59°F15°C | 47°F8°C | 36°F2°C | 28°F-2°C |
| Rain/snow | 3.1 in78 mm | 3.1 in78 mm | 3.9 in100 mm | 3.8 in97 mm | 3.8 in96 mm | 4.8 in121 mm | 4.9 in124 mm | 4.8 in121 mm | 4.0 in102 mm | 4.3 in110 mm | 3.5 in90 mm | 4.4 in111 mm |
| Humidity | 84% | 83% | 80% | 78% | 79% | 79% | 75% | 74% | 74% | 78% | 81% | 85% |
| Cloud | 62% | 60% | 60% | 58% | 61% | 56% | 53% | 52% | 50% | 53% | 54% | 63% |
| Comfort | 45 | 47 | 59 | 81 | 83 | 75 | 67 | 70 | 83 | 84 | 70 | 46 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 47 m (154 ft), close to Philadelphia's own ~13 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 38–44°F (4–7°C) and lows down to 23°F (-5°C). It's the driest season, with only about 10.5 in (267 mm) of rain or snow, 22% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December – February), averaging 46/100.
Temperatures climb through the season, from 50°F highs in March to 72°F by May. About 11.5 in (293 mm) of rain falls across these months, 24% of the year's total. Nights dip below freezing in March. April & May are among the best-scoring months (season average 74/100).
Peak warmth: highs of 81–86°F (27–30°C). It's the wettest season, with about 14.4 in (366 mm) of rain, 30% of the year's total. June & July feel humid, with humidity near 79%. June – August score well without being the very best (season average 71/100).
Temperatures slide from 79°F highs in September to 55°F by November. About 11.9 in (302 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 36°F (2°C). September & October are among the best-scoring months (season average 79/100).
By comfort score: 5 Great, 3 Good and 4 Fair. Great months: April – June and September & October. Tap a month for its own guide.
For the most comfortable weather in Philadelphia, aim for April & May and September & October. October tops our comfort score at 84/100, with highs around 67°F (19°C) and 4.3 in (110 mm) of rain. June – August and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
July is the wettest month, averaging about 4.9 in (124 mm) of rain. January is the driest, with about 3.1 in (78 mm). The yearly total is around 48.3 in (1228 mm).
January is the coldest, with average lows of 23°F (-5°C) and highs of 38°F (4°C). The warmest is July, with average highs of 86°F (30°C).
Yes: in June & July humidity averages 79% with warm temperatures, so it feels muggy. Summer highs peak around 86°F (30°C).
On average, yes: lows fall below 32°F (0°C) in December – March, bottoming out around 23°F (-5°C) in January.
Poll the group on April & May and September & October dates, then plan the days, packing and costs together.
