Aspen weather in August

In August, Aspen sees average daytime highs of 66°F and overnight lows near 40°F, with 2.6 in of precipitation across 13.9 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 67°F in the first days to 64°F by the end. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Aspen's 6th-clearest and 10th-windiest month. For the whole year in context, see Aspen's year-round climate.

Daytime high: 66°; 2nd warmest
Overnight low: 40°; 11th coldest
Precipitation: 2.6 in; 13.9 wet days
Daylight: 13 h 30 min; 5:25 AM – 6:58 PM
Cloud cover: 54%; 6th clearest
Wind: 4 mph; 10th windiest
Solar energy: 6.63 kWh/m²
Travel score: 5.7; out of 10

Aspen is city in and county seat of Pitkin County, Colorado, United States.

Density: 685/km²; people per km²
Founded: 1879

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← July Aspen year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 67°F in the first days to 64°F by the end.

A typical August day in Aspen reaches about 66°F in the afternoon and slips back to 40°F overnight — a 26°F spread between the day's warmth and the night's chill. On most days the high lands between 60°F and 71°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	67	67	67	67	67	67	67	66	66	66	66	66	66	66	66	66	66	65	65	65	65	65	65	65	65	65	64	64	64	64	64
Avg low (°F)	41	41	41	41	41	41	41	40	40	40	40	40	40	40	40	40	40	39	39	39	39	39	39	39	39	38	38	38	38	38	38

	Avg high (°F)	Avg low (°F)
1	67	41
2	67	41
3	67	41
4	67	41
5	67	41
6	67	41
7	67	41
8	66	40
9	66	40
10	66	40
11	66	40
12	66	40
13	66	40
14	66	40
15	66	40
16	66	40
17	66	40
18	65	39
19	65	39
20	65	39
21	65	39
22	65	39
23	65	39
24	65	39
25	65	39
26	65	38
27	64	38
28	64	38
29	64	38
30	64	38
31	64	38

How August really feels in Aspen

Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Aspen weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 29% of August, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	53	53	54	55	56	57	58	59	60	61	61	62	62	62	62	63	61	61	61	60	60	60	60	60	61	62	62	63	64	65	65
Cloudier (%)	47	47	46	45	44	43	42	41	40	39	39	38	38	38	38	37	39	39	39	40	40	40	40	40	39	38	38	37	36	35	35

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	54	46
4	55	45
5	56	44
6	57	43
7	58	42
8	59	41
9	60	40
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	63	37
17	61	39
18	61	39
19	61	39
20	60	40
21	60	40
22	60	40
23	60	40
24	60	40
25	61	39
26	62	38
27	62	38
28	63	37
29	64	36
30	65	35
31	65	35

Chance of precipitation in August

Any precipitationSnow

Aspen gets around 2.6 in of rain and snow over 13.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 47% on the wettest days, and about 0 day brings snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	47	47	46	46	45	45	44	44	43	43	42	42	41	41	41	41	41	42	42	43	43	44	44	44	44	43	43	43	42	42	42
Snow chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2

	Rain chance (%)	Snow chance (%)
1	47	0
2	47	0
3	46	0
4	46	0
5	45	0
6	45	0
7	44	0
8	44	0
9	43	0
10	43	0
11	42	0
12	42	0
13	41	0
14	41	0
15	41	0
16	41	0
17	41	1
18	42	1
19	42	1
20	43	1
21	43	1
22	44	1
23	44	1
24	44	1
25	44	1
26	43	1
27	43	1
28	43	1
29	42	1
30	42	1
31	42	2

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:11 AM to 5:39 AM, and sunset from 7:16 PM to 6:36 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	14.1	14.0	14.0	14.0	13.9	13.9	13.9	13.8	13.8	13.8	13.7	13.7	13.7	13.6	13.6	13.5	13.5	13.5	13.4	13.4	13.4	13.3	13.3	13.2	13.2	13.1	13.1	13.1	13.0	13.0	12.9
Sunrise (AM)	5:11	5:12	5:13	5:14	5:15	5:16	5:17	5:17	5:18	5:19	5:20	5:21	5:22	5:23	5:24	5:25	5:26	5:27	5:28	5:29	5:30	5:31	5:32	5:32	5:33	5:34	5:35	5:36	5:37	5:38	5:39
Sunset (PM)	7:16	7:15	7:14	7:12	7:11	7:10	7:09	7:08	7:07	7:06	7:04	7:03	7:02	7:00	6:59	6:58	6:56	6:55	6:54	6:52	6:51	6:49	6:48	6:46	6:45	6:43	6:42	6:40	6:39	6:37	6:36

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.1	5:11	7:16
2	14.0	5:12	7:15
3	14.0	5:13	7:14
4	14.0	5:14	7:12
5	13.9	5:15	7:11
6	13.9	5:16	7:10
7	13.9	5:17	7:09
8	13.8	5:17	7:08
9	13.8	5:18	7:07
10	13.8	5:19	7:06
11	13.7	5:20	7:04
12	13.7	5:21	7:03
13	13.7	5:22	7:02
14	13.6	5:23	7:00
15	13.6	5:24	6:59
16	13.5	5:25	6:58
17	13.5	5:26	6:56
18	13.5	5:27	6:55
19	13.4	5:28	6:54
20	13.4	5:29	6:52
21	13.4	5:30	6:51
22	13.3	5:31	6:49
23	13.3	5:32	6:48
24	13.2	5:32	6:46
25	13.2	5:33	6:45
26	13.1	5:34	6:43
27	13.1	5:35	6:42
28	13.1	5:36	6:40
29	13.0	5:37	6:39
30	13.0	5:38	6:37
31	12.9	5:39	6:36

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.63 kWh/m².

For context, solar energy here swings from a low near 2.54 kWh/m² to a high of 8.29 kWh/m² in June across the year — August's 6.63 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.8	6.8	6.8	6.8	6.8	6.8	6.7	6.7	6.7	6.7	6.6	6.6	6.6	6.5	6.5	6.5	6.4	6.4	6.4	6.4	6.3	6.3	6.3	6.3
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.9	Intense
2	6.9	Intense
3	6.9	Intense
4	6.9	Intense
5	6.9	Intense
6	6.9	Intense
7	6.9	Intense
8	6.8	Intense
9	6.8	Intense
10	6.8	Intense
11	6.8	Intense
12	6.8	Intense
13	6.8	Intense
14	6.7	Intense
15	6.7	Intense
16	6.7	Intense
17	6.7	Intense
18	6.6	Intense
19	6.6	Intense
20	6.6	Intense
21	6.5	Intense
22	6.5	Intense
23	6.5	Intense
24	6.4	Intense
25	6.4	Intense
26	6.4	Intense
27	6.4	Intense
28	6.3	Intense
29	6.3	Intense
30	6.3	Intense
31	6.3	Intense

Planning a trip in August

Is August a good time to visit Aspen?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.7

Sightseeing

2nd-best month of the year

2.3

Beach & pool

2nd-best month of the year

August is a reasonable time to visit Aspen for sightseeing.

What to pack for Aspen in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Aspen sees daytime highs around 66°F and nights near 40°F. Pack sun protection. Worth having: a warm layer and rain gear. About 14 days see rain.

sun protectiona warm layerrain gear

UV index in Aspen in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (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

Location & terrain

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.

2 miles

2,887 ft

trees 77%

10 miles

6,417 ft

trees 74%

50 miles

8,927 ft

trees 64%

treesgrasslandartificial surfacesbare terrainmoss and lichen

← July Aspen year-round climate September →Best places to visit in August

August weather nearby: Montrose 75 mi · Clifton 88 mi · Grand Junction 93 mi · Golden 94 mi · Dakota Ridge 94 mi · Ken Caryl 95 mi · Columbine 98 mi · Lakewood 99 mi

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	67	41
2	67	41
3	67	41
4	67	41
5	67	41
6	67	41
7	67	41
8	66	40
9	66	40
10	66	40
11	66	40
12	66	40
13	66	40
14	66	40
15	66	40
16	66	40
17	66	40
18	65	39
19	65	39
20	65	39
21	65	39
22	65	39
23	65	39
24	65	39
25	65	39
26	65	38
27	64	38
28	64	38
29	64	38
30	64	38
31	64	38

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	54	46
4	55	45
5	56	44
6	57	43
7	58	42
8	59	41
9	60	40
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	63	37
17	61	39
18	61	39
19	61	39
20	60	40
21	60	40
22	60	40
23	60	40
24	60	40
25	61	39
26	62	38
27	62	38
28	63	37
29	64	36
30	65	35
31	65	35

	Rain chance (%)	Snow chance (%)
1	47	0
2	47	0
3	46	0
4	46	0
5	45	0
6	45	0
7	44	0
8	44	0
9	43	0
10	43	0
11	42	0
12	42	0
13	41	0
14	41	0
15	41	0
16	41	0
17	41	1
18	42	1
19	42	1
20	43	1
21	43	1
22	44	1
23	44	1
24	44	1
25	44	1
26	43	1
27	43	1
28	43	1
29	42	1
30	42	1
31	42	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°F)	Avg low (°F)
1	67	41
2	67	41
3	67	41
4	67	41
5	67	41
6	67	41
7	67	41
8	66	40
9	66	40
10	66	40
11	66	40
12	66	40
13	66	40
14	66	40
15	66	40
16	66	40
17	66	40
18	65	39
19	65	39
20	65	39
21	65	39
22	65	39
23	65	39
24	65	39
25	65	39
26	65	38
27	64	38
28	64	38
29	64	38
30	64	38
31	64	38

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	54	46
4	55	45
5	56	44
6	57	43
7	58	42
8	59	41
9	60	40
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	63	37
17	61	39
18	61	39
19	61	39
20	60	40
21	60	40
22	60	40
23	60	40
24	60	40
25	61	39
26	62	38
27	62	38
28	63	37
29	64	36
30	65	35
31	65	35

	Rain chance (%)	Snow chance (%)
1	47	0
2	47	0
3	46	0
4	46	0
5	45	0
6	45	0
7	44	0
8	44	0
9	43	0
10	43	0
11	42	0
12	42	0
13	41	0
14	41	0
15	41	0
16	41	0
17	41	1
18	42	1
19	42	1
20	43	1
21	43	1
22	44	1
23	44	1
24	44	1
25	44	1
26	43	1
27	43	1
28	43	1
29	42	1
30	42	1
31	42	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°F)	Avg low (°F)
1	67	41
2	67	41
3	67	41
4	67	41
5	67	41
6	67	41
7	67	41
8	66	40
9	66	40
10	66	40
11	66	40
12	66	40
13	66	40
14	66	40
15	66	40
16	66	40
17	66	40
18	65	39
19	65	39
20	65	39
21	65	39
22	65	39
23	65	39
24	65	39
25	65	39
26	65	38
27	64	38
28	64	38
29	64	38
30	64	38
31	64	38

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	54	46
4	55	45
5	56	44
6	57	43
7	58	42
8	59	41
9	60	40
10	61	39
11	61	39
12	62	38
13	62	38
14	62	38
15	62	38
16	63	37
17	61	39
18	61	39
19	61	39
20	60	40
21	60	40
22	60	40
23	60	40
24	60	40
25	61	39
26	62	38
27	62	38
28	63	37
29	64	36
30	65	35
31	65	35

	Rain chance (%)	Snow chance (%)
1	47	0
2	47	0
3	46	0
4	46	0
5	45	0
6	45	0
7	44	0
8	44	0
9	43	0
10	43	0
11	42	0
12	42	0
13	41	0
14	41	0
15	41	0
16	41	0
17	41	1
18	42	1
19	42	1
20	43	1
21	43	1
22	44	1
23	44	1
24	44	1
25	44	1
26	43	1
27	43	1
28	43	1
29	42	1
30	42	1
31	42	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100