What is the weather like in Philadelphia vs St. John's, Newfoundland in September?

In September, Philadelphia averages 27°C high / 18°C low with about 101 mm of rain; St. John's, Newfoundland averages 18°C high / 9°C low with about 91 mm.

Philadelphia vs St. John's, Newfoundland in September

Philadelphia is the better pick in September — 81 vs 77 on SeasonMap's comfort score. Philadelphia is warm, rainy, clean air, while St. John's, Newfoundland is nice, rainy, clean air.

Philadelphia vs St. John's, Newfoundland — September climate, side by side

	🇺🇸 Philadelphia	🇨🇦 St. John's, Newfoundland
Comfort score	81/100 (A)	77/100 (B)
Feels-like high	28°C	17°C
Avg high / low	27° / 18°	18° / 9°
Rainfall	101 mm	91 mm
Rainy days	7	10
Humidity	72%	81%
Air quality (AQI)	45	36

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

Month by month

Philadelphia vs St. John's, Newfoundland in September — FAQ

Is September better in Philadelphia or St. John's, Newfoundland?: Philadelphia is the better pick in September — 81 vs 77 on SeasonMap's comfort score. Philadelphia is warm, rainy, clean air, while St. John's, Newfoundland is nice, rainy, clean air.
What is the weather like in Philadelphia vs St. John's, Newfoundland in September?: In September, Philadelphia averages 27°C high / 18°C low with about 101 mm of rain; St. John's, Newfoundland averages 18°C high / 9°C low with about 91 mm.