May weather forecast
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

Weather in May

May, the last month of the spring, in Aspen, is a chilly month, with average temperature varying between 49.6°F (9.8°C) and 24.8°F (-4°C).

Temperature

In May, the average high-temperature increases, from a wintry 37.9°F (3.3°C) in April, to a chilly 49.6°F (9.8°C). In Aspen, the average low-temperature is 24.8°F (-4°C).

Humidity

The average relative humidity in May is 68%.

Rainfall

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

Snowfall

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

Daylight

In Aspen, Colorado, the average length of the day is 14.4h.

Sunshine

The average sunshine in Aspen is 10.7h.

UV index

The average daily maximum UV index in Aspen is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 3 in May transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Aspen?

In May, the average relative humidity is 68%.

How much does it rain in Aspen in May?

In May, in Aspen, Colorado, the rain falls for 7.1 days. Throughout May, 0.43" (11mm) of precipitation is accumulated.

How much does it snow in Aspen in May?

In May, in Aspen, it is snowing for 8 days. Throughout May, 1.77" (45mm) of snow is accumulated.

How many hours of daylight does Aspen have in May?

The average length of the day in May in Aspen is 14.4h.

How long on average sun shines in May in Aspen?

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

What is the UV index intensity in May in Aspen?

In May, the average daily maximum UV index in Aspen is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

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).
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"

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

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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").
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).
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: 14.4h

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

  • Average sunshine in May: 10.7h

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

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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

Months with the highest UV index are June, July and August (UV index 4).
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

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).

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