Weather in Aspen in October

Shoulder season. October sits in between. You will get good days and you will lose some. Highs sit at 13 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

October ranks 6 of 12 in Aspen: past the worst of the year but short of June, which is the month to book if the dates are open.

Rain on 9 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 13 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 11 nights fall below freezing. Across the twenty years measured, the hottest October day reached 24.7 °C and the coldest night fell to -14.6 °C.

October is moderately variable: 17 mm in the driest year against 88 mm in the wettest, around an average of 43 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.

Wind is light at 2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 63%.

How October sits in the year

The month is on the way down: 8 °C cooler than September, with November dropping another 7.3 °C. The first week and the last are not the same trip.

Daylight in October

11.2 hours of daylight, losing 1.2 hours across the month. That is between Aspen's extremes of 14.9 and 9.4 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 39.6 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 2405 m, altitude is doing as much work here as latitude: thinner air means fierce sun by day and heat that leaves the moment it sets.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Aspen versus nearby

If Aspen is one option among several, the nearby comparison is worth making. Denver is a better bet in October — 7.6 °C warmer, 3 days less rain. Moab is a better bet in October — 8.9 °C warmer, 4 days less rain.

So: October is a compromise. June is 30 points better and is what Aspen is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Aspen

See all twelve months in Aspen, or where else to go in October.