August 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

Weather in August

August, the last month of the summer, in Aspen, is also an enjoyable month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 67.3°F (19.6°C).

Temperature

In August, the average high-temperature is practically the same as in July - an enjoyable 67.3°F (19.6°C). In August, the average low-temperature is 38.8°F (3.8°C).

Humidity

The average relative humidity in August is 59%.

Rainfall

In Aspen, during August, the rain falls for 9.3 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Aspen, during the entire year, the rain falls for 72.4 days and collects up to 4.33" (110mm) of precipitation.

Snowfall

July and August are months without snowfall.

Daylight

In Aspen, the average length of the day is 13.6h.

Sunshine

The average sunshine in Aspen is 11.5h.

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in August transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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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FAQ

What is the average humidity in August in Aspen?

In August, the average relative humidity in Aspen is 59%.

How much does it rain in Aspen in August?

In August, the rain falls for 9.3 days. Throughout August, 0.43" (11mm) of precipitation is accumulated.

When it does not snow in Aspen?

In Aspen snow does not fall in July and August.

Does it snow in Aspen in August?

In Aspen, Colorado, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Aspen have in August?

The average length of the day in August in Aspen is 13.6h.

How many hours of sunshine does Aspen have in August?

In Aspen, the average sunshine in August is 11.5h.

What are the months with 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 UV index reading in August in Aspen?

In Aspen, Colorado, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in August
Aspen, CO

Average temperature in August - Aspen, CO
  • Average high temperature in August: 67.3°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 August: 38.8°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 August
Aspen, CO

Average pressure in August - Aspen, CO
  • Average pressure in August: 30.07"

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 August
Aspen, CO

Average wind speed in August - Aspen, CO
  • Average wind speed in August: 4.5mph

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 August
Aspen, CO

Average humidity in August - Aspen, CO
  • Average humidity in August: 59%

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 August
Aspen, CO

Average rainfall in August - Aspen, CO
  • Average rainfall in August: 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 August
Aspen, CO

Average rainfall days in August - Aspen, CO
  • Average rainfall days in August: 9.3 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 August
Aspen, CO

Average snowfall in August - Aspen, CO
  • Average snowfall in August: 0"

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 August
Aspen, CO

Average snowfall days in August - Aspen, CO
  • Average snowfall days in August: 0.1 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 August /
Average sunshine in August
Aspen, CO

Average daylight in August / Average sunshine in August - Aspen, CO
  • Average daylight in August: 13.6h

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 August: 11.5h

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

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Average sunshine days in August
Aspen, CO

Average sunshine days in August - Aspen, CO
  • Average sunshine days in August: 12.8 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 August
Aspen, CO

Average UV index in August - Aspen, CO
  • Average UV index in August: 4

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 August
Aspen, CO

Average cloud cover in August - Aspen, CO
  • Average cloud cover in August: 19

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 August
Aspen, CO

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