Aspen weather in October

In October, Aspen sees average daytime highs of 45°F and overnight lows near 21°F, with 2.1 in of precipitation across 9.8 wet days and about 11 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 51°F in the first days to 40°F by the end. The sky is clear or mostly clear about 51% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 24 min by month's end. Set against the rest of the year, October is Aspen's 1st-clearest and 6th-windiest month. For the whole year in context, see Aspen's year-round climate.

Daytime high: 45°; 6th warmest
Overnight low: 21°; 7th coldest
Precipitation: 2.1 in; 9.8 wet days
Daylight: 11 hours; 6:24 AM – 5:21 PM
Cloud cover: 42%; 1st clearest
Wind: 4 mph; 6th windiest
Solar energy: 4.38 kWh/m²
Travel score: 1.2; 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.

← September Aspen year-round climate November →Best places to visit in October

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 51°F in the first days to 40°F by the end.

A typical October day in Aspen reaches about 45°F in the afternoon and slips back to 21°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 33°F and 55°F. Set against its neighbours, October runs about 13°F cooler than September and about 12°F warmer than November.

	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)	52	52	51	51	50	50	49	49	48	48	47	47	47	46	46	45	45	44	44	43	43	42	42	42	41	41	40	40	40	39	39
Avg low (°F)	28	27	27	26	26	26	25	25	24	24	23	23	22	22	21	21	21	20	20	19	19	18	18	17	17	16	16	15	15	15	14

	Avg high (°F)	Avg low (°F)
1	52	28
2	52	27
3	51	27
4	51	26
5	50	26
6	50	26
7	49	25
8	49	25
9	48	24
10	48	24
11	47	23
12	47	23
13	47	22
14	46	22
15	46	21
16	45	21
17	45	21
18	44	20
19	44	20
20	43	19
21	43	19
22	42	18
23	42	18
24	42	17
25	41	17
26	41	16
27	40	16
28	40	15
29	40	15
30	39	15
31	39	14

How October really feels in Aspen

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 31 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

14 feel bitter (≤ 14°F)

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Aspen weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 9th-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 33%.

	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 (%)	70	69	69	68	68	68	68	68	68	69	70	70	70	70	70	70	70	69	68	68	68	66	66	65	64	64	63	63	63	64	64
Cloudier (%)	30	31	31	32	32	32	32	32	32	31	30	30	30	30	30	30	30	31	32	32	32	34	34	35	36	36	37	37	37	36	36

	Clearer (%)	Cloudier (%)
1	70	30
2	69	31
3	69	31
4	68	32
5	68	32
6	68	32
7	68	32
8	68	32
9	68	32
10	69	31
11	70	30
12	70	30
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	69	31
19	68	32
20	68	32
21	68	32
22	66	34
23	66	34
24	65	35
25	64	36
26	64	36
27	63	37
28	63	37
29	63	37
30	64	36
31	64	36

Chance of precipitation in October

Any precipitationSnow

Aspen gets around 2.1 in of rain and snow over 9.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 31% and peaks near 34% on the wettest days, and about 8 days bring 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 (%)	33	34	34	34	34	34	33	33	32	31	30	29	29	28	28	28	28	28	28	28	29	29	30	30	31	31	31	31	31	31	31
Snow chance (%)	17	18	19	19	20	21	21	22	22	22	22	22	22	23	23	23	24	24	24	25	26	26	27	28	29	29	30	30	31	31	31

	Rain chance (%)	Snow chance (%)
1	33	17
2	34	18
3	34	19
4	34	19
5	34	20
6	34	21
7	33	21
8	33	22
9	32	22
10	31	22
11	30	22
12	29	22
13	29	22
14	28	23
15	28	23
16	28	23
17	28	24
18	28	24
19	28	24
20	28	25
21	29	26
22	29	26
23	30	27
24	30	28
25	31	29
26	31	29
27	31	30
28	31	30
29	31	31
30	31	31
31	31	31

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October 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 October

Winds average 4 mph in October.

Across October, 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 October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over October. Sunrise moves from 6:08 AM to 6:40 AM, and sunset from 5:44 PM to 5:02 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)	11.6	11.6	11.5	11.5	11.4	11.4	11.3	11.3	11.2	11.2	11.2	11.1	11.1	11.0	11.0	11.0	10.9	10.9	10.8	10.8	10.7	10.7	10.7	10.6	10.6	10.5	10.5	10.5	10.4	10.4	10.4
Sunrise (AM)	6:08	6:09	6:10	6:11	6:12	6:13	6:14	6:15	6:16	6:17	6:18	6:19	6:21	6:22	6:23	6:24	6:25	6:26	6:27	6:28	6:29	6:30	6:31	6:32	6:33	6:35	6:36	6:37	6:38	6:39	6:40
Sunset (PM)	5:44	5:42	5:41	5:39	5:38	5:36	5:34	5:33	5:31	5:30	5:28	5:27	5:25	5:24	5:22	5:21	5:19	5:18	5:17	5:15	5:14	5:13	5:11	5:10	5:09	5:07	5:06	5:05	5:04	5:03	5:02

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.6	6:08	5:44
2	11.6	6:09	5:42
3	11.5	6:10	5:41
4	11.5	6:11	5:39
5	11.4	6:12	5:38
6	11.4	6:13	5:36
7	11.3	6:14	5:34
8	11.3	6:15	5:33
9	11.2	6:16	5:31
10	11.2	6:17	5:30
11	11.2	6:18	5:28
12	11.1	6:19	5:27
13	11.1	6:21	5:25
14	11.0	6:22	5:24
15	11.0	6:23	5:22
16	11.0	6:24	5:21
17	10.9	6:25	5:19
18	10.9	6:26	5:18
19	10.8	6:27	5:17
20	10.8	6:28	5:15
21	10.7	6:29	5:14
22	10.7	6:30	5:13
23	10.7	6:31	5:11
24	10.6	6:32	5:10
25	10.6	6:33	5:09
26	10.5	6:35	5:07
27	10.5	6:36	5:06
28	10.5	6:37	5:05
29	10.4	6:38	5:04
30	10.4	6:39	5:03
31	10.4	6:40	5:02

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.38 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 — October's 4.38 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)	5.1	5.0	5.0	4.9	4.9	4.8	4.8	4.8	4.7	4.7	4.6	4.6	4.6	4.5	4.5	4.4	4.4	4.3	4.3	4.2	4.2	4.1	4.1	4.0	4.0	4.0	3.9	3.9	3.8	3.8	3.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	5.1	Bright
2	5.0	Bright
3	5.0	Bright
4	4.9	Bright
5	4.9	Bright
6	4.8	Bright
7	4.8	Bright
8	4.8	Bright
9	4.7	Bright
10	4.7	Bright
11	4.6	Bright
12	4.6	Bright
13	4.6	Bright
14	4.5	Bright
15	4.5	Bright
16	4.4	Bright
17	4.4	Bright
18	4.3	Bright
19	4.3	Bright
20	4.2	Bright
21	4.2	Bright
22	4.1	Bright
23	4.1	Bright
24	4.0	Bright
25	4.0	Bright
26	4.0	Moderate
27	3.9	Moderate
28	3.9	Moderate
29	3.8	Moderate
30	3.8	Moderate
31	3.7	Moderate

Planning a trip in October

Is October a good time to visit Aspen?

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

1.2

Sightseeing

6th-best month of the year

0.0

Beach & pool

6th-best month of the year

October is a weaker month for outdoor sightseeing in Aspen.

What to pack for Aspen in October

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

In October, Aspen sees daytime highs around 45°F and nights near 21°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Aspen in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. 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

← September Aspen year-round climate November →Best places to visit in October

October 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	52	28
2	52	27
3	51	27
4	51	26
5	50	26
6	50	26
7	49	25
8	49	25
9	48	24
10	48	24
11	47	23
12	47	23
13	47	22
14	46	22
15	46	21
16	45	21
17	45	21
18	44	20
19	44	20
20	43	19
21	43	19
22	42	18
23	42	18
24	42	17
25	41	17
26	41	16
27	40	16
28	40	15
29	40	15
30	39	15
31	39	14

	Clearer (%)	Cloudier (%)
1	70	30
2	69	31
3	69	31
4	68	32
5	68	32
6	68	32
7	68	32
8	68	32
9	68	32
10	69	31
11	70	30
12	70	30
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	69	31
19	68	32
20	68	32
21	68	32
22	66	34
23	66	34
24	65	35
25	64	36
26	64	36
27	63	37
28	63	37
29	63	37
30	64	36
31	64	36

	Rain chance (%)	Snow chance (%)
1	33	17
2	34	18
3	34	19
4	34	19
5	34	20
6	34	21
7	33	21
8	33	22
9	32	22
10	31	22
11	30	22
12	29	22
13	29	22
14	28	23
15	28	23
16	28	23
17	28	24
18	28	24
19	28	24
20	28	25
21	29	26
22	29	26
23	30	27
24	30	28
25	31	29
26	31	29
27	31	30
28	31	30
29	31	31
30	31	31
31	31	31

	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	52	28
2	52	27
3	51	27
4	51	26
5	50	26
6	50	26
7	49	25
8	49	25
9	48	24
10	48	24
11	47	23
12	47	23
13	47	22
14	46	22
15	46	21
16	45	21
17	45	21
18	44	20
19	44	20
20	43	19
21	43	19
22	42	18
23	42	18
24	42	17
25	41	17
26	41	16
27	40	16
28	40	15
29	40	15
30	39	15
31	39	14

	Clearer (%)	Cloudier (%)
1	70	30
2	69	31
3	69	31
4	68	32
5	68	32
6	68	32
7	68	32
8	68	32
9	68	32
10	69	31
11	70	30
12	70	30
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	69	31
19	68	32
20	68	32
21	68	32
22	66	34
23	66	34
24	65	35
25	64	36
26	64	36
27	63	37
28	63	37
29	63	37
30	64	36
31	64	36

	Rain chance (%)	Snow chance (%)
1	33	17
2	34	18
3	34	19
4	34	19
5	34	20
6	34	21
7	33	21
8	33	22
9	32	22
10	31	22
11	30	22
12	29	22
13	29	22
14	28	23
15	28	23
16	28	23
17	28	24
18	28	24
19	28	24
20	28	25
21	29	26
22	29	26
23	30	27
24	30	28
25	31	29
26	31	29
27	31	30
28	31	30
29	31	31
30	31	31
31	31	31

	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	52	28
2	52	27
3	51	27
4	51	26
5	50	26
6	50	26
7	49	25
8	49	25
9	48	24
10	48	24
11	47	23
12	47	23
13	47	22
14	46	22
15	46	21
16	45	21
17	45	21
18	44	20
19	44	20
20	43	19
21	43	19
22	42	18
23	42	18
24	42	17
25	41	17
26	41	16
27	40	16
28	40	15
29	40	15
30	39	15
31	39	14

	Clearer (%)	Cloudier (%)
1	70	30
2	69	31
3	69	31
4	68	32
5	68	32
6	68	32
7	68	32
8	68	32
9	68	32
10	69	31
11	70	30
12	70	30
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	69	31
19	68	32
20	68	32
21	68	32
22	66	34
23	66	34
24	65	35
25	64	36
26	64	36
27	63	37
28	63	37
29	63	37
30	64	36
31	64	36

	Rain chance (%)	Snow chance (%)
1	33	17
2	34	18
3	34	19
4	34	19
5	34	20
6	34	21
7	33	21
8	33	22
9	32	22
10	31	22
11	30	22
12	29	22
13	29	22
14	28	23
15	28	23
16	28	23
17	28	24
18	28	24
19	28	24
20	28	25
21	29	26
22	29	26
23	30	27
24	30	28
25	31	29
26	31	29
27	31	30
28	31	30
29	31	31
30	31	31
31	31	31

	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