Weather in Aspen in April

A hard month. April is a hard month in Aspen, and worth planning around. Highs sit at 9 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

April ranks 7 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 12 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 9 °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: 21 nights drop below freezing, so anything left outside stays frozen. Across the twenty years measured, the hottest April day reached 21.7 °C and the coldest night fell to -15.6 °C.

April is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest April on record still delivered 88 mm against 23 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 51 mm average is a reasonable planning figure, not a promise.

Wind is light at 3.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 74%.

How April sits in the year

The month is on the way up: 5.7 °C warmer than March, and May adds another 6.6 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in April

13.2 hours of daylight, gaining 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

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

April in Aspen versus nearby

If Aspen is one option among several, the nearby comparison is worth making. Denver is a better bet in April — 9.3 °C warmer, 3 days less rain. Moab is a better bet in April — 11.5 °C warmer, 7 days less rain.

So: April is a compromise. June is 52 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 April.