Aspen Weather in September
September in Aspen sees daytime temperatures around 19°C (66°F) and lows of 4°C (39°F) at night. Pack a rain jacket because some rainfall is likely.
Rainfall in Aspen in September
Typically around 12 days of rainfall are expected, averaging 47 mm (1.9 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Aspen in September
Aspen in September gets highs of 19°C (66°F) during the day and drops to 4°C (39°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Aspen.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Aspen's climate page.
Aspen Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
19°C (66°F)
Chance of Rain
39%
Precipitation
47 mm (1.9 in)
Rainy days
12 days
Humidity
51%
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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What to Wear in Aspen in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Aspen in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Aspen's climate page.
See the full Aspen climate overview or explore weather in the United States of America.
