Denver Weather in September

September is one of the excellent months to visit Denver, with daytime temperatures of 20°C (68°F) and lows of 11°C (52°F) at night. Do note that quite a bit of rainfall is typical, averaging around 61 mm (2.4 in).

Rainfall in Denver in September

Looking at the last 30 years, the data shows about 12 days with rain, averaging 61 mm (2.4 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Denver in September

Denver has excellent weather in September, with days reaching 20°C (68°F) and nights cooling to 11°C (52°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Denver in September

With about 144 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.