Chicago vs Great Smoky Mountains National Park in September

Chicago is the better pick in September — 91 vs 84 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Great Smoky Mountains National Park is nice, rainy, clean air.

Chicago vs Great Smoky Mountains National ParkSeptember climate, side by side

ChicagoGreat Smoky Mountains National Park
Comfort score91/100 (S)84/100 (A)
Feels-like high25°C23°C
Avg high / low25° / 17°23° / 14°
Rainfall63 mm146 mm
Rainy days79
Humidity73%78%
Air quality (AQI)4537

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Chicago vs Great Smoky Mountains National Park in September — FAQ

Is September better in Chicago or Great Smoky Mountains National Park?
Chicago is the better pick in September — 91 vs 84 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Great Smoky Mountains National Park is nice, rainy, clean air.
What is the weather like in Chicago vs Great Smoky Mountains National Park in September?
In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Great Smoky Mountains National Park averages 23°C high / 14°C low with about 146 mm.