Aspen in Summer
In summer (June, July and August), Aspen sees average daytime highs around 65°F and overnight lows near 37°F, with 6.0 in of precipitation over about 33 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 55°F in early June to 64°F by late August. The sky is clear or mostly clear about 35% of the time across summer, and the air most often feels dry.
Summer is Aspen's best season of the year to visit on our travel score. For the whole year in context, see Aspen's year-round climate.
- Avg daytime high
- 65°F
- warmest season of the year
- Avg overnight low
- 37°F
- Precipitation
- 6.0 in
- 33 wet days
- Avg wind
- 4 mph
- Travel score
- 5.8
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Aspen in Summer
Over the season highs climb from about 55°F in early June to 64°F by late August.
A typical summer day in Aspen reaches about 65°F and drops to 37°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Aspen
Once humidity and wind are folded in, summer brings about 0 days that feel above 90°F and 26 that feel at or below 32°F.
The story in summer is cold — wind chill drags the overnight "feels like" below the raw low.
Aspen weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 24° / 6° | 2.3 | 11.3 | 13 | 9.6 | 0.0 |
| Feb | 27° / 8° | 2.4 | 13.1 | 14 | 10.5 | 0.0 |
| Mar | 34° / 14° | 2.5 | 12.5 | 13 | 11.7 | 0.0 |
| Apr | 39° / 19° | 3.3 | 13.9 | 13.7 | 13 | 0.0 |
| May | 48° / 26° | 2.2 | 11.4 | 7.3 | 14.1 | 1.7 |
| Jun | 60° / 32° | 1.2 | 7.1 | 1.2 | 14.7 | 5.4 |
| Jul | 68° / 40° | 2.3 | 11.7 | 0.1 | 14.5 | 6.2 |
| Aug | 66° / 40° | 2.6 | 13.9 | 0.1 | 13.5 | 5.7 |
| Sep | 58° / 33° | 2.1 | 10.4 | 2.1 | 12.3 | 4.5 |
| Oct | 45° / 21° | 2.1 | 9.8 | 7.7 | 11 | 1.2 |
| Nov | 33° / 8° | 2.1 | 9.3 | 10.4 | 9.9 | 0.0 |
| Dec | 24° / 3° | 2.2 | 10.7 | 12.3 | 9.3 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 35% of the time across summer.
Chance of precipitation in Summer
Aspen gets around 6.0 in of rain and snow over 33 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 30 min in early June to 12 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 7.5 kWh/m².
Is summer a good time to visit Aspen?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Aspen for sightseeing.
What to pack for Aspen in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Aspen sees daytime highs around 65°F and nights near 37°F. Pack sun protection. Worth having: a warm layer and rain gear. About 33 days see rain.
UV index in Aspen in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Aspen peaks around June 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 7 | 7 | 10 | 13 | 12 | 11 | 8 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 7 | High |
| Apr | 7 | Very high |
| May | 10 | Very high |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Where is Aspen?
Aspen sits at 39.2°N, 106.8°W, 0 ft above sea level, in United States. The nearest listed city is Montrose, 75 mi away.
Topography around Aspen
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Aspen.
Within 2 miles, the terrain around Aspen has large variations in elevation — a maximum elevation change of 2,887 ft around an average of 8,688 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 6,417 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,927 ft.
The land around Aspen is covered by trees (77%) within 2 miles, trees (74%) within 10 miles, and trees (64%) and grassland (24%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Aspen (39.1911°, -106.8175°, elevation 0 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.