Monthly weather forecast and climate
Aspen, CO

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
January, like December, is a freezing cold winter month in Aspen, Colorado, with average temperature varying between 2.1°F (-16.6°C) and 24.4°F (-4.2°C). January and December, with an average high-temperature of 24.4°F (-4.2°C), are the coldest months. Weather in January »

February, the last month of the winter, in Aspen, is also a subzero cold month, with average temperature ranging between min 5.4°F (-14.8°C) and max 25°F (-3.9°C). In Aspen, the average high-temperature is relatively the same as in January - a still subzero cold 25°F (-3.9°C). Weather in February »

The first month of the spring, March, is a cold month in Aspen, Colorado, with average temperature varying between 11.1°F (-11.6°C) and 32°F (0°C). In March, the average high-temperature marginally rises, from a subzero cold 25°F (-3.9°C) in February, to a cold 32°F (0°C). Weather in March »

April, like March, in Aspen, Colorado, is another cold spring month, with average temperature ranging between max 37.9°F (3.3°C) and min 16°F (-8.9°C). In April, the average high-temperature slightly increases, from 32°F (0°C) in March, to a still wintry 37.9°F (3.3°C). Weather in April »

May, the last month of the spring, in Aspen, is a frosty month, with temperature in the range of an average low of 24.8°F (-4°C) and an average high of 49.6°F (9.8°C). In May, the average high-temperature increases, from a cold 37.9°F (3.3°C) in April, to a chilly 49.6°F (9.8°C). Weather in May »

The first month of the summer, June, is an enjoyable month in Aspen, Colorado, with average temperature ranging between min 35.4°F (1.9°C) and max 64.9°F (18.3°C). In June, the average high-temperature significantly increases, from a chilly 49.6°F (9.8°C) in May, to a comfortable 64.9°F (18.3°C). Weather in June »

July in Aspen, Colorado, is a pleasant summer month, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 40.5°F (4.7°C). The warmest month is July, with an average high-temperature of 69.4°F (20.8°C) and an average low-temperature of 40.5°F (4.7°C). Weather in July »

August, the last month of the summer, in Aspen, is another comfortable month, with average temperature fluctuating between 38.8°F (3.8°C) and 67.3°F (19.6°C). In Aspen, the average high-temperature in August is practically the same as in July - a comfortable 67.3°F (19.6°C). Weather in August »

September, the first month of the autumn, in Aspen, is also an enjoyable month, with average temperature ranging between max 61°F (16.1°C) and min 34.5°F (1.4°C). In September, the average high-temperature slightly decreases, from an enjoyable 67.3°F (19.6°C) in August, to a still comfortable 61°F (16.1°C). Weather in September »

October, like September, is a frosty autumn month in Aspen, Colorado, with temperature in the range of an average low of 24.6°F (-4.1°C) and an average high of 46°F (7.8°C). In October, the average high-temperature declines considerably, from a comfortable 61°F (16.1°C) in September, to a chilly 46°F (7.8°C). Weather in October »

The last month of the autumn, November, is also a wintry month in Aspen, Colorado, with average temperature varying between 34.5°F (1.4°C) and 13.3°F (-10.4°C). In November, the average high-temperature drops, from a frosty 46°F (7.8°C) in October, to a cold 34.5°F (1.4°C). Weather in November »

The first month of the winter, December, is also a subzero cold month in Aspen, Colorado, with average temperature fluctuating between 3.6°F (-15.8°C) and 24.4°F (-4.2°C). The coldest months are January and December, with an average high-temperature of 24.4°F (-4.2°C). Weather in December »

What is the coldest month in Aspen?

The coldest months in Aspen, Colorado, are January and December, with an average high-temperature of 24.4°F (-4.2°C).

How many days does it rain in Aspen?

Throughout the year, in Aspen, there are 72.4 rainfall days, and 4.33" (110mm) of precipitation is accumulated.

When does it snow in Aspen?

Months with snowfall in Aspen are January through June, September through December.

How much does it snow in Aspen?

In Aspen, Colorado, during the entire year, snow falls for 83.2 days, and aggregates up to 19.45" (494mm) of snow.

What is the most humid month in Aspen?

The most humid month is February, with an average relative humidity of 90%.

What is the month with the least sunshine in Aspen?

With an average of 5.2h of sunshine, February has the least sunshine of the year.

What is the month with the lowest UV index in Aspen?

Months with the lowest UV index are February and December, with an average maximum UV index of 1.

What is the rainiest month in Aspen?

The wettest months in Aspen are March and July, with an average 0.51" (13mm) of rainfall.

What is the snowiest month in Aspen?

The month with the most snowfall in Aspen is March when snow falls for 12.7 days and typically aggregates up to 3.98" (101mm) of snow.

What is the least humid month in Aspen?

The least humid month is June, with an average relative humidity of 51%.

When are the longest days in Aspen?

June has the longest days of the year in Aspen, Colorado, with an average of 14.9h of daylight.

What month has the most sunshine in Aspen?

The month with the most sunshine is June, with an average of 11.8h of sunshine.

When is the highest UV index in Aspen?

Months with the highest UV index are June through August, with an average maximum UV index of 4.

What is the warmest month in Aspen?

July is the warmest month, with an average high-temperature of 69.4°F (20.8°C) and an average low-temperature of 40.5°F (4.7°C).

When it does not snow in Aspen?

In Aspen, Colorado, snow does not fall in July and August.

What is the driest month in Aspen?

September is the month with the least rainfall in Aspen, Colorado. Rain falls for 5.5 days and accumulates 0.2" (5mm) of precipitation.

What is the month with the shortest days in Aspen?

The month with the shortest days in Aspen, Colorado, is December, with an average of 9.5h of daylight.
Average temperature - Aspen, CO
Average pressure - Aspen, CO

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

Average wind speed - Aspen, CO

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).

Average rainfall - Aspen, CO

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

Average rainfall days - Aspen, CO
Average snowfall days - Aspen, CO

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

Average daylight / Average sunshine - Aspen, CO

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

The month with the most sunshine is June (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 5.2h).

Average sunshine days - Aspen, CO

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

Average visibility - Aspen, CO

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