AI-generatedAspen, Colorado at a glance
- Best time
- Jun – Sep
- Warmest month
- Jul · 26°
- Sunshine a year
- 2,600 h
- Rain a year
- 571 mm
- Climate
- Continental
- Time zone
- UTC−7 / UTC−6
- Elevation
- 2,405 m
Climate in Aspen, Colorado
Aspen, Colorado has warm to hot summers and cold winters with occasional snow. July is the warmest month with average highs of 26 °C, while January is the coolest at −1 °C. With around 2,600 hours of sunshine a year, Aspen, Colorado is sunny; June is the sunniest month with 10.1 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: June – September
Best for skiing: December – April
Keep in mindSnow
A typical day in October
- Morning, 08:00: about 0°
- Midday, 13:00: about 11°
- Afternoon, 16:00: about 12°
- Evening, 20:00: about 5°
- Night, 23:00: about 2°
07:1618:30
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:59–07:52 · evening 17:54–18:47
- Blue hour
- Morning 06:49–06:59 · evening 18:47–18:57
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Aspen, Colorado in October?
In October, Aspen, Colorado is cool: daytime highs average 12 °C, and nights often drop below freezing (−2 °C). The sun shines for around 7 hours a day. Rain falls on about 9 days, adding up to 56 mm. Snow falls on about 5 days. All in all, October is a good month for a holiday in Aspen, Colorado.
More details for October
- Daylight
- 11 h 15 min07:16 – 18:30
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 38 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 5 days1 cm or more of fresh snowAll months
- Time zone
- UTC−6America/Denver
How the score comes together
- Temperatureweight 50 %60 %
- Sunshineweight 20 %58 %
- Few rainy daysweight 30 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Hat, scarf & gloves
- Rain jacket or umbrella
Sunshine hours in Aspen, Colorado
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.5 of 11.2 hours of daylight in Aspen, Colorado, 58 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Aspen, Colorado
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 35 min
- Light brown skin
- about 45 min
- Olive skin
- about 60 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Aspen, Colorado: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Aspen, Colorado has about 9 rainy days with 56 mm of rain in total.
Wind and clouds in Aspen, Colorado
How breezy and how cloudy Aspen, Colorado is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Aspen, Colorado typically peaks at 11 km/h during the day: Beaufort 2, light air.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 38 % of the sky over Aspen, Colorado: mostly sunny, with about 6.5 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Snow in Aspen, Colorado
When Aspen, Colorado is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, Aspen, Colorado has about 5 days with at least 1 cm of fresh snow, 20 cm in total. The chance of seeing snow during a week's stay is 43 out of 100: possible. On the slopes at about 3,000 m, the ski season usually runs Dec – Apr.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Aspen, Colorado
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
FrostOctober: nights around −2°. Heating and warm bedding are a must.
The coolest nights are in December (−15°), the warmest in July (9°). Nights fall below 8 °C on average from September to June, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 20 | −1° | −14° | 4.8 h | 11 | 62 |
| FebruaryFeb | 19 | 0° | −12° | 5.3 h | 13 | 60 |
| MarchMar | 25 | 4° | −8° | 6.7 h | 12 | 61 |
| AprilApr | 37 | 8° | −4° | 7.5 h | 12 | 66 |
| MayMay | 75 | 13° | −1° | 8.7 h | 9 | 46 |
| JuneJun | 98 | 22° | 5° | 10.1 h | 5 | 23 |
| JulyJul | 93 | 26° | 9° | 9.5 h | 6 | 22 |
| AugustAug | 94 | 24° | 8° | 8.5 h | 6 | 24 |
| SeptemberSep | 91 | 20° | 5° | 7.9 h | 7 | 35 |
| OctoberOct | 61 | 12° | −2° | 6.5 h | 9 | 56 |
| NovemberNov | 27 | 4° | −12° | 5.3 h | 9 | 52 |
| DecemberDec | 18 | −1° | −15° | 4.4 h | 12 | 64 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
39.19° N, 106.82° W · 2,405 m · America/Denver
Best time to visit Aspen, Colorado
The best time to visit Aspen, Colorado is from June to September. Hiking and mountain trips are best from June to September, when the trails are largely free of snow. The wettest month is April with 66 mm of precipitation.
Aspen, Colorado through the seasons
How the weather changes over the seasons, with averages for each.
Aspen, Colorado in spring
Mar – May
Fair
- 4–13 °C by day
- 8 h of sun a day
- 32 rainy days in all
Aspen, Colorado in summer
Jun – Aug
Excellent
- 22–26 °C by day
- 9 h of sun a day
- 17 rainy days in all
Aspen, Colorado in autumn
Sep – Nov
Good
- 4–20 °C by day
- 7 h of sun a day
- 25 rainy days in all
Aspen, Colorado in winter
Dec – Feb
Poor
- -1–0 °C by day
- 5 h of sun a day
- 35 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Aspen, Colorado for you.
Your best months: June, September
Based on the climate averages; tap a month to see its details.
Compare two months in Aspen, Colorado
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Aspen, Colorado: score 98 against 61. In June, days are 10 °C warmer than in October. June has 4 fewer rainy days. The sun shines 4 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Weather score | 61 | 98better |
| Day high | 12° | 22° |
| Night low | −2° | 5° |
| Sunshine | 6.5 h | 10.1 hbetter |
| Rainy days | 9 | 5better |
| Rainfall | 56 mm | 23 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Hiking & mountain trips
Jun – Sep
13–27 °C in the village, little snow
Snow
Oct – May
Snow on 2 or more days
Best for skiing
Dec – Apr
Estimated snow conditions on slopes at about 3,000 m, from snowfall, temperature and sunshine. A climate estimate, not a snow report.
Aspen, Colorado month by month
The typical weather for every month at a glance.
20January-1° · 5 h
In January, Aspen, Colorado is freezing cold: daytime highs average −1 °C, and nights often drop below freezing (−14 °C). Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 11 days, totalling 62 mm. Snow falls on about 11 days. All in all, January is not an ideal month for a holiday in Aspen, Colorado.
Aspen, Colorado in January19February0° · 5 h
In February, Aspen, Colorado is freezing cold: daytime highs average 0 °C, and nights often drop below freezing (−12 °C). Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 13 days, totalling 60 mm. Snow falls on about 12 days. All in all, February is not an ideal month for a holiday in Aspen, Colorado.
Aspen, Colorado in February25March4° · 7 h
In March, Aspen, Colorado is cold: daytime highs average 4 °C, and nights often drop below freezing (−8 °C). The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 61 mm in total. Snow falls on about 10 days. All in all, March is not an ideal month for a holiday in Aspen, Colorado.
Aspen, Colorado in March37April8° · 8 h
In April, Aspen, Colorado is cold: daytime highs average 8 °C, and nights often drop below freezing (−4 °C). The sun shines for around 8 hours a day. Rain is frequent, with about 12 rainy days and 66 mm in total. Snow falls on about 9 days. All in all, April is not an ideal month for a holiday in Aspen, Colorado.
Aspen, Colorado in April75May13° · 9 h
In May, Aspen, Colorado is cool: daytime highs average 13 °C, and nights often drop below freezing (−1 °C). The sun shines for around 9 hours a day. Rain falls on about 9 days, adding up to 46 mm. Snow falls on about 4 days. All in all, May is a good month for a holiday in Aspen, Colorado.
Aspen, Colorado in May98June22° · 10 h
In June, Aspen, Colorado is warm: daytime highs average 22 °C, and nights cool down to about 5 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 23 mm. All in all, June is an excellent month for a holiday in Aspen, Colorado.
Aspen, Colorado in June93July26° · 10 h
In July, Aspen, Colorado is warm: daytime highs average 26 °C, and nights cool down to about 9 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 6 days, adding up to 22 mm. All in all, July is an excellent month for a holiday in Aspen, Colorado.
Aspen, Colorado in July94August24° · 9 h
In August, Aspen, Colorado is warm: daytime highs average 24 °C, and nights cool down to about 8 °C. The sun shines for around 9 hours a day. Rain falls on about 6 days, adding up to 24 mm. All in all, August is an excellent month for a holiday in Aspen, Colorado.
Aspen, Colorado in August91September20° · 8 h
In September, Aspen, Colorado is mild: daytime highs average 20 °C, and nights cool down to about 5 °C. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 35 mm. All in all, September is an excellent month for a holiday in Aspen, Colorado.
Aspen, Colorado in September61October12° · 7 h
In October, Aspen, Colorado is cool: daytime highs average 12 °C, and nights often drop below freezing (−2 °C). The sun shines for around 7 hours a day. Rain falls on about 9 days, adding up to 56 mm. Snow falls on about 5 days. All in all, October is a good month for a holiday in Aspen, Colorado.
Aspen, Colorado in October27November4° · 5 h
In November, Aspen, Colorado is cold: daytime highs average 4 °C, and nights often drop below freezing (−12 °C). Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 52 mm in total. Snow falls on about 8 days. All in all, November is not an ideal month for a holiday in Aspen, Colorado.
Aspen, Colorado in November18December-1° · 4 h
In December, Aspen, Colorado is freezing cold: daytime highs average −1 °C, and nights often drop below freezing (−15 °C). Expect around 4 hours of sunshine a day. Precipitation, often as snow, falls on about 12 days, totalling 64 mm. Snow falls on about 11 days. All in all, December is not an ideal month for a holiday in Aspen, Colorado.
Aspen, Colorado in DecemberAspen, Colorado compared
Put Aspen, Colorado side by side with another destination.
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Aspen vs. Vail
In October the holiday weather in Aspen and Vail is about equally good (score 61 vs. 59). During the day Vail is 1 °C cooler than Aspen. Vail gets one hour less sunshine a day.
| in October | Aspen | Vail |
|---|---|---|
| Holiday score | 61 | 59 |
| Daytime high | 12° | 11° |
| Sunshine | 7 h | 6 h |
| Rainy days | 9 | 8 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
USA in October: the best places
In October, Aspen, Colorado ranks 26 among the 31 nearest destinations in this country.
- Las Vegas26°99
- 2Sedona23°97
- 3El Paso26°97
- 4Page (Lake Powell)21°96
- 5Moab21°95
- 6Reno19°95
- 7Albuquerque22°94
- 8Flagstaff (Grand Canyon)18°93
- 26AspenThis page12°61
Planning a trip to Aspen, Colorado
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Aspen, Colorado in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Aspen, Colorado has its best school-holiday weather during the Easter holidays (ski score 100) and its weakest during October half-term (score 61).
- 100
Easter holidays
Mar – Apr
Excellent · ski conditionsBest holidays
- 7 °C by day
- 7.3 h of sun a day
- 12 rainy days a month
Good for: Skiing
- 80
May half-term
May – Jun
Excellent
- 15 °C by day
- 9.0 h of sun a day
- 8 rainy days a month
Keep in mind: Snow
- 94
Summer holidays
Jul – Aug
Excellent
- 24 °C by day
- 8.9 h of sun a day
- 6 rainy days a month
Good for: Sightseeing & walks
- 61
October half-term
Oct
Good
- 12 °C by day
- 6.5 h of sun a day
- 9 rainy days a month
Keep in mind: Snow
- 93
Christmas holidays
Dec – Jan
Excellent · ski conditions
- −1 °C by day
- 4.6 h of sun a day
- 11 rainy days a month
Good for: Skiing
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 9 h 45 min
- Distance
- 7,670 km
- Time zone
- UTC−6
- Jet lag
- About 5 days (7 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Aspen, Colorado
When is the best time to visit Aspen, Colorado?
The best time to visit Aspen, Colorado is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Aspen, Colorado?
July is the warmest month, with average highs of 26 °C and nights around 9 °C. January is the coolest month at −1 °C.
When does it rain most in Aspen, Colorado?
The wettest month is April with 66 mm of precipitation. The driest month is July with 22 mm.
How many hours of sunshine does Aspen, Colorado get?
Aspen, Colorado gets around 2,600 hours of sunshine a year. The sunniest month is June with 10.1 hours a day; in December there are 4.4 hours a day.
What time zone is Aspen, Colorado in?
Aspen, Colorado uses the time zone America/Denver: UTC−7 in January and UTC−6 in July.
How long is the flight from London to Aspen, Colorado?
A nonstop flight from London to Aspen, Colorado takes about 9 h 45 min, for a straight-line distance of about 7,670 km.
Which school holidays are best for Aspen, Colorado?
Aspen, Colorado has its best school-holiday weather during the Easter holidays (ski score 100) and its weakest during October half-term (score 61). Holiday ratings (0–100): Easter holidays 100 (Ski), May half-term 80, Summer holidays 94, October half-term 61, Christmas holidays 93 (Ski).
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