What to Wear in Denver in September
Pleasant, crisp evenings. Expect 10°–26°C with 5 rainy days on average.
☀️
High
26°C
🌙
Low
10°C
🌧️
Rain days
5
🌡️
Feel
Mild & Comfortable
Typical outfit
~18°C average
About September in Denver
September in Denver typically brings pleasant, crisp evenings. With averages of 10°–26°C, the conditions call for ideal sightseeing weather! layer smartly — mornings and evenings will be cooler.
Mornings feel cool but afternoons can warm up significantly. A trench or jacket over a lighter outfit is ideal.
September in other cities