SeasonMapRocky Mountain National Park vs Yellowstone National Park in September
Rocky Mountain National Park is the better pick in September — 90 vs 84 on SeasonMap's comfort score. Rocky Mountain National Park is cool, a little rain, clean air, while Yellowstone National Park is cool, a little rain, clean air.
Rocky Mountain National Park vs Yellowstone National Park — September climate, side by side
| Rocky Mountain National Park | Yellowstone National Park | |
|---|---|---|
| Comfort score | 90/100 (S) | 84/100 (A) |
| Feels-like high | 15°C | 14°C |
| Avg high / low | 18° / 6° | 17° / 1° |
| Rainfall | 41 mm | 59 mm |
| Rainy days | 6 | 11 |
| Humidity | 57% | 59% |
| Air quality (AQI) | 40 | 43 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Rocky Mountain National Park vs Yellowstone National Park in September — FAQ
- Is September better in Rocky Mountain National Park or Yellowstone National Park?
- Rocky Mountain National Park is the better pick in September — 90 vs 84 on SeasonMap's comfort score. Rocky Mountain National Park is cool, a little rain, clean air, while Yellowstone National Park is cool, a little rain, clean air.
- What is the weather like in Rocky Mountain National Park vs Yellowstone National Park in September?
- In September, Rocky Mountain National Park averages 18°C high / 6°C low with about 41 mm of rain; Yellowstone National Park averages 17°C high / 1°C low with about 59 mm.