October weather forecast
Aspen, CO

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The icy Maroon Bells in the Elk Mountains viewed from the White River below
The icy Maroon Bells in the Elk Mountains viewed from the White River below

Weather in October

October ushers in a colder autumn with a noticeable drop in temperature in Aspen. As the color of leaves turn, Aspen's outstanding beauty demands visitor appreciation. Slight increases in cloud cover result in a dramatic drop in visibility. The first hints of winter emerge as snowfall returns with a moderate decline in average temperature. Despite the crisp weather, the city remains a picturesque paradise as October concludes.

Temperature

October's onset brings a clear reduction in the average high-temperature, falling from an enjoyable 61°F (16.1°C) in September to a chilly 46°F (7.8°C). In Aspen, October is marked by an average low-temperature of 24.6°F (-4.1°C).

Humidity

In October, the average relative humidity is 65%.

Rainfall

In Aspen, in October, during 5.3 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, in Aspen, there are 72.4 rainfall days, and 4.33" (110mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Aspen. In October, it is snowing for 5.3 days. Throughout October, 1.81" (46mm) of snow is accumulated. Throughout the year, there are 83.2 snowfall days, and 19.45" (494mm) of snow is accumulated.

Daylight

In Aspen, the average length of the day in October is 11h and 10min.
On the first day of the month, sunrise is at 7:04 am and sunset at 6:49 pm. On the last day of October, sunrise is at 7:34 am and sunset at 6:06 pm MDT.

Sunshine

In Aspen, the average sunshine in October is 7h.

UV index

In October, the average daily maximum UV index in Aspen is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 2 in October, converts into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What is the average October temperature in Aspen?

In Aspen, 46°F (7.8°C) is the average high-temperature and 24.6°F (-4.1°C) is the average low-temperature during October.

What is the average humidity in October in Aspen?

The average relative humidity in October in Aspen, Colorado, is 65%.

How many days does it rain in October in Aspen?

In Aspen, Colorado, in October, it is raining for 5.3 days, with typically 0.31" (8mm) of accumulated precipitation.

How many days does it snow in October in Aspen?

In October, it is snowing for 5.3 days. Throughout October, 1.81" (46mm) of snow is accumulated.

What is the average length of the day in October in Aspen?

In October, the average day length in Aspen, Colorado, is 11h and 10min.

When is the sunrise / sunset in October in Aspen?

In October, on the first day of the month, sunrise is at 7:04 am and sunset at 6:49 pm. On the last day of the month, in Aspen, Colorado, sunrise is at 7:34 am and sunset at 6:06 pm MDT.

How many hours of sunshine does Aspen have in October?

In October, the average sunshine duration in Aspen, Colorado, is 7h.

What is the UV index intensity in October in Aspen?

The average daily maximum UV index in October in Aspen is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Aspen, CO

Average temperature in October - Aspen, CO
  • Average high temperature in October: 46°F

The warmest month (with the highest average high temperature) is July (69.4°F).
The months with the lowest average high temperature are January and December (24.4°F).

  • Average low temperature in October: 24.6°F

The month with the highest average low temperature is July (40.5°F).
The coldest month (with the lowest average low temperature) is January (2.1°F).

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Average pressure in October
Aspen, CO

Average pressure in October - Aspen, CO
  • Average pressure in October: 30.07"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are April and May (29.95"Hg).

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Average wind speed in October
Aspen, CO

Average wind speed in October - Aspen, CO
  • Average wind speed in October: 5mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and August (4.5mph).

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Average humidity in October
Aspen, CO

Average humidity in October - Aspen, CO
  • Average humidity in October: 65%

The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is June (51%).

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Average rainfall in October
Aspen, CO

Average rainfall in October - Aspen, CO
  • Average rainfall in October: 0.31"

The wettest months (with the highest rainfall) are March and July (0.51").
The driest month (with the least rainfall) is September (0.2").

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Average rainfall days in October
Aspen, CO

Average rainfall days in October - Aspen, CO
  • Average rainfall days in October: 5.3 days

The month with the highest number of rainy days is July (12.1 days).
The month with the least rainy days is January (2.8 days).

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Average snowfall in October
Aspen, CO

Average snowfall in October - Aspen, CO
  • Average snowfall in October: 1.81"

The month with the highest snowfall is March (3.98").
The months with the least snowfall are July and August (0").

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Average snowfall days in October
Aspen, CO

Average snowfall days in October - Aspen, CO
  • Average snowfall days in October: 5.3 days

The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are July and August (0.1 days).

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Average daylight in October /
Average sunshine in October
Aspen, CO

Average daylight in October / Average sunshine in October - Aspen, CO
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 7h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

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Average sunshine days in October
Aspen, CO

Average sunshine days in October - Aspen, CO
  • Average sunshine days in October: 22.9 days

The month with the most sunshine days is November (23.6 days).
The month with the least sunshine days is July (9.8 days).

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Average UV index in October
Aspen, CO

Average UV index in October - Aspen, CO
  • Average UV index in October: 2

The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in October
Aspen, CO

Average cloud cover in October - Aspen, CO
  • Average cloud cover in October: 22

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 15).

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Average visibility in October
Aspen, CO

Average visibility in October - Aspen, CO
  • Average visibility in October: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Aspen, Colorado, USA

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