What is the weather like in Boulder vs Edmonton in September?

In September, Boulder averages 28°C high / 10°C low with about 32 mm of rain; Edmonton averages 20°C high / 8°C low with about 29 mm.

Boulder vs Edmonton in September

Boulder is the better pick in September — 90 vs 84 on SeasonMap's comfort score. Boulder is warm, a little rain, clean air, while Edmonton is nice, dry, clean air.

Boulder vs Edmonton — September climate, side by side

	🇺🇸 Boulder	🇨🇦 Edmonton
Comfort score	90/100 (S)	84/100 (A)
Feels-like high	26°C	17°C
Avg high / low	28° / 10°	20° / 8°
Rainfall	32 mm	29 mm
Rainy days	4	5
Humidity	53%	68%
Air quality (AQI)	36	49

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

Month by month

Boulder vs Edmonton in September — FAQ

Is September better in Boulder or Edmonton?: Boulder is the better pick in September — 90 vs 84 on SeasonMap's comfort score. Boulder is warm, a little rain, clean air, while Edmonton is nice, dry, clean air.
What is the weather like in Boulder vs Edmonton in September?: In September, Boulder averages 28°C high / 10°C low with about 32 mm of rain; Edmonton averages 20°C high / 8°C low with about 29 mm.