Philadelphia weather in April
April in Philadelphia: nice, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Philadelphia · #243 of 604 destinations to visit in April · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Philadelphia climate normals — April
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 46°F | |
| Feels like (high) | 16°C / 61°F | |
| Rainfall | 117 mm / 4.6 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 5°C / 41°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 13.3 h | |
| Wind | 20 km/h / 12 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Philadelphia in April — FAQ
- Is April a good time to visit Philadelphia?
- April in Philadelphia: nice, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Philadelphia on SeasonMap's comfort score (82/100).
- What is the weather like in Philadelphia in April?
- In April, Philadelphia averages a daily high of 17.8°C and a low of 7.7°C, with about 117.1 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Philadelphia in April?
- Philadelphia has a mean US Air Quality Index of about 48 in April.