- Save on skiing holidays to the USA in winter 2020/2021
- Pay low deposits from Just £100 per person
- Filter by promotional offers, duration, board basis & more
Aspen weather in September 2021
Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.
- 1717°C max day temperature
- 99 days with some rainfall
- -3-3°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 4444 mm of monthly rainfall
- 88 (Very High) UV index
Recommended for Colorado
The September weather guide for Aspen, Colorado shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
How warm is it in Aspen in September?
Daytime temperatures usually reach 17°C in Aspen in September, falling to -3°C at night.
How sunny is it in Aspen in September?
There are normally 9 hours of bright sunshine each day in Aspen in September - that's 70% of daylight hours.
Does it rain in Aspen in September?
There are usually 9 days with some rain in Aspen in September and the average monthly rainfall is 44mm.
Aspen sunrise & sunset times for September 2021
Browse the sunrise & sunset times for Aspen in September 2021. Select a month to view Aspen sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Wednesday, 1st September 2021||06:36||19:37|
|Wednesday, 15th September 2021||06:49||19:15|
|Thursday, 30th September 2021||07:03||18:51|
- Save £15 on hotel bookings for £150 or more
- Free cancellation available on most hotel rooms
- Travel before 30th June 2021 (inclusive)
Hotel deal finder
Metric (°C / mm) | Imperial (°F / inches)
Discover more about the USA
Where is hot in Colorado in September for 2021/2022?
Below are average maximum temperatures at popular destinations in Colorado in September. Select a destination to see more weather parameters.
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.