SeasonMapNapa vs Philadelphia in September
Napa is the better pick in September — 88 vs 81 on SeasonMap's comfort score. Napa is hot, dry, clean air, while Philadelphia is warm, rainy, clean air.
Napa vs Philadelphia — September climate, side by side
| Napa | Philadelphia | |
|---|---|---|
| Comfort score | 88/100 (A) | 81/100 (A) |
| Feels-like high | 30°C | 28°C |
| Avg high / low | 30° / 13° | 27° / 18° |
| Rainfall | 5 mm | 101 mm |
| Rainy days | 1 | 7 |
| Humidity | 59% | 72% |
| Air quality (AQI) | 34 | 45 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Napa vs Philadelphia in September — FAQ
- Is September better in Napa or Philadelphia?
- Napa is the better pick in September — 88 vs 81 on SeasonMap's comfort score. Napa is hot, dry, clean air, while Philadelphia is warm, rainy, clean air.
- What is the weather like in Napa vs Philadelphia in September?
- In September, Napa averages 30°C high / 13°C low with about 5 mm of rain; Philadelphia averages 27°C high / 18°C low with about 101 mm.