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

In September, Boulder averages 28°C high / 10°C low with about 32 mm of rain; Kelowna averages 24°C high / 10°C low with about 43 mm.

Boulder vs Kelowna in September

Kelowna is the better pick in September — 94 vs 90 on SeasonMap's comfort score. Kelowna is nice, a little rain, clean air, while Boulder is warm, a little rain, clean air.

Boulder vs Kelowna — September climate, side by side

	🇺🇸 Boulder	🇨🇦 Kelowna
Comfort score	90/100 (S)	94/100 (S)
Feels-like high	26°C	23°C
Avg high / low	28° / 10°	24° / 10°
Rainfall	32 mm	43 mm
Rainy days	4	9
Humidity	53%	63%
Air quality (AQI)	36	36

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

Month by month

Boulder vs Kelowna in September — FAQ

Is September better in Boulder or Kelowna?: Kelowna is the better pick in September — 94 vs 90 on SeasonMap's comfort score. Kelowna is nice, a little rain, clean air, while Boulder is warm, a little rain, clean air.
What is the weather like in Boulder vs Kelowna in September?: In September, Boulder averages 28°C high / 10°C low with about 32 mm of rain; Kelowna averages 24°C high / 10°C low with about 43 mm.