May 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 May

May is a transitional month from chilly spring towards the dawning summer in Aspen. Days further elongate enabling residents to soak in warmth, vibrant colors and the fresher atmosphere. With the average high temperature reaching 49.6°F (9.8°C), outdoor activities are favorable. Showers drape Aspen with an average rainfall of 0.43" (11mm) indicating the city is not done with precipitation yet. The city basks under increasing sunlit hours, bringing more vibrancy to the scenery.

Temperature

May witnesses an increase in the average high-temperature, moving from a wintry 37.9°F (3.3°C) in April to a chilly 49.6°F (9.8°C). A notable decrease from the day's highest temperature marks May, culminating in an average low of 24.8°F (-4°C).

Humidity

The average relative humidity in May in Aspen is 68%.

Rainfall

In Aspen, in May, during 7.1 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Aspen, Colorado, during the entire year, the rain falls for 72.4 days and collects up to 4.33" (110mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Aspen. In Aspen, during May, snow falls for 8 days and regularly aggregates up to 1.77" (45mm) of snow. Throughout the year, there are 83.2 snowfall days, and 19.45" (494mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 20min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:42 am and sunset at 8:27 pm MDT.

Sunshine

In May, the average sunshine in Aspen is 10.7h.

UV index

In Aspen, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum high UV index of 3 in May translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What is the usual temperature for Aspen in May?

During May, Aspen experiences an average high-temperature of 49.6°F (9.8°C) and a low-temperature of 24.8°F (-4°C).

What is the average humidity in May in Aspen?

The average relative humidity in May is 68%.

How many days does it rain in May in Aspen?

In Aspen, Colorado, in May, it is raining for 7.1 days, with typically 0.43" (11mm) of accumulated precipitation.

How much does it snow in Aspen in May?

In Aspen, Colorado, in May, during 8 snowfall days, 1.77" (45mm) of snow is typically accumulated.

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

The average day length in May in Aspen is 14h and 20min.

When are sunrise and sunset in May in Aspen?

In May, on the first day of the month, sunrise is at 6:07 am and sunset at 8:00 pm. On the last day of the month, in Aspen, sunrise is at 5:42 am and sunset at 8:27 pm MDT.

How many hours of sunshine does Aspen have in May?

The average sunshine duration in May in Aspen, Colorado, is 10.7h.

What is the UV index reading in May in Aspen?

In Aspen, Colorado, the average daily maximum UV index in May is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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 May
Aspen, CO

Average temperature in May - Aspen, CO
  • Average high temperature in May: 49.6°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 May: 24.8°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 May
Aspen, CO

Average pressure in May - Aspen, CO
  • Average pressure in May: 29.95"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 May
Aspen, CO

Average wind speed in May - Aspen, CO
  • Average wind speed in May: 5.6mph

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 May
Aspen, CO

Average humidity in May - Aspen, CO
  • Average humidity in May: 68%

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 May
Aspen, CO

Average rainfall in May - Aspen, CO
  • Average rainfall in May: 0.43"

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 May
Aspen, CO

Average rainfall days in May - Aspen, CO
  • Average rainfall days in May: 7.1 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 May
Aspen, CO

Average snowfall in May - Aspen, CO
  • Average snowfall in May: 1.77"

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 May
Aspen, CO

Average snowfall days in May - Aspen, CO
  • Average snowfall days in May: 8 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 May /
Average sunshine in May
Aspen, CO

Average daylight in May / Average sunshine in May - Aspen, CO
  • Average daylight in May: 14h and 2min

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 May: 10h and 4min

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 May
Aspen, CO

Average sunshine days in May - Aspen, CO
  • Average sunshine days in May: 15.5 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 May
Aspen, CO

Average UV index in May - Aspen, CO
  • Average UV index in May: 3

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 May
Aspen, CO

Average cloud cover in May - Aspen, CO
  • Average cloud cover in May: 29

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 May
Aspen, CO

Average visibility in May - Aspen, CO
  • Average visibility in May: 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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