SeasonMapPhiladelphia vs St. Louis in September
St. Louis is the better pick in September — 85 vs 81 on SeasonMap's comfort score. St. Louis is hot, rainy, clean air, while Philadelphia is warm, rainy, clean air.
Philadelphia vs St. Louis — September climate, side by side
| Philadelphia | St. Louis | |
|---|---|---|
| Comfort score | 81/100 (A) | 85/100 (A) |
| Feels-like high | 28°C | 30°C |
| Avg high / low | 27° / 18° | 29° / 15° |
| Rainfall | 101 mm | 83 mm |
| Rainy days | 7 | 5 |
| Humidity | 72% | 67% |
| Air quality (AQI) | 45 | 50 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Philadelphia vs St. Louis in September — FAQ
- Is September better in Philadelphia or St. Louis?
- St. Louis is the better pick in September — 85 vs 81 on SeasonMap's comfort score. St. Louis is hot, rainy, clean air, while Philadelphia is warm, rainy, clean air.
- What is the weather like in Philadelphia vs St. Louis in September?
- In September, Philadelphia averages 27°C high / 18°C low with about 101 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.