What is the weather like in Boulder vs Salt Lake City in September?

In September, Boulder averages 28°C high / 10°C low with about 32 mm of rain; Salt Lake City averages 29°C high / 14°C low with about 19 mm.

Boulder vs Salt Lake City in September

Boulder and Salt Lake City are nearly tied in September — 90 vs 92 on SeasonMap's comfort score. Boulder is warm, a little rain, clean air; Salt Lake City is warm, dry, clean air.

Boulder vs Salt Lake City — September climate, side by side

	🇺🇸 Boulder	🇺🇸 Salt Lake City
Comfort score	90/100 (S)	92/100 (S)
Feels-like high	26°C	27°C
Avg high / low	28° / 10°	29° / 14°
Rainfall	32 mm	19 mm
Rainy days	4	1
Humidity	53%	51%
Air quality (AQI)	36	41

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

Month by month

Boulder vs Salt Lake City in September — FAQ

Is September better in Boulder or Salt Lake City?: Boulder and Salt Lake City are nearly tied in September — 90 vs 92 on SeasonMap's comfort score. Boulder is warm, a little rain, clean air; Salt Lake City is warm, dry, clean air.
What is the weather like in Boulder vs Salt Lake City in September?: In September, Boulder averages 28°C high / 10°C low with about 32 mm of rain; Salt Lake City averages 29°C high / 14°C low with about 19 mm.