SeasonMapSt. Louis vs Washington in September
St. Louis is the better pick in September — 85 vs 80 on SeasonMap's comfort score. St. Louis is hot, rainy, clean air, while Washington is hot, rainy, clean air.
St. Louis vs Washington — September climate, side by side
| St. Louis | Washington | |
|---|---|---|
| Comfort score | 85/100 (A) | 80/100 (A) |
| Feels-like high | 30°C | 30°C |
| Avg high / low | 29° / 15° | 28° / 17° |
| Rainfall | 83 mm | 108 mm |
| Rainy days | 5 | 8 |
| Humidity | 67% | 74% |
| Air quality (AQI) | 50 | 47 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
St. Louis vs Washington in September — FAQ
- Is September better in St. Louis or Washington?
- St. Louis is the better pick in September — 85 vs 80 on SeasonMap's comfort score. St. Louis is hot, rainy, clean air, while Washington is hot, rainy, clean air.
- What is the weather like in St. Louis vs Washington in September?
- In September, St. Louis averages 29°C high / 15°C low with about 83 mm of rain; Washington averages 28°C high / 17°C low with about 108 mm.