What is the weather like in Chicago vs Niagara Falls in September?

In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Niagara Falls averages 24°C high / 14°C low with about 68 mm.

Chicago vs Niagara Falls in September

Chicago and Niagara Falls are nearly tied in September — 91 vs 92 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air; Niagara Falls is nice, a little rain, clean air.

Chicago vs Niagara Falls — September climate, side by side

	🇺🇸 Chicago	🇨🇦 Niagara Falls
Comfort score	91/100 (S)	92/100 (S)
Feels-like high	25°C	23°C
Avg high / low	25° / 17°	24° / 14°
Rainfall	63 mm	68 mm
Rainy days	7	7
Humidity	73%	74%
Air quality (AQI)	45	49

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

Month by month

Chicago vs Niagara Falls in September — FAQ

Is September better in Chicago or Niagara Falls?: Chicago and Niagara Falls are nearly tied in September — 91 vs 92 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air; Niagara Falls is nice, a little rain, clean air.
What is the weather like in Chicago vs Niagara Falls in September?: In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Niagara Falls averages 24°C high / 14°C low with about 68 mm.