August weather forecast and climate
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn
The colorful sky above the sunlit Denver city, Colorado in autumn

Weather in August

August, the last month of the summer, in Denver, is another warm month, with average temperature varying between 58.3°F (14.6°C) and 83.1°F (28.4°C).

Temperature

In Denver, the average high-temperature in August is almost the same as in July - a still moderately hot 83.1°F (28.4°C). In Denver, the average low-temperature is 58.3°F (14.6°C).

Heat index

The average heat index is appraised at 82.8°F (28.2°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like wind, clothing, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in August is 42%.

Rainfall

In Denver, Colorado, it is raining for 15.1 days, with typically 1.1" (28mm) of accumulated precipitation. In Denver, during the entire year, the rain falls for 119.5 days and collects up to 12.95" (329mm) of precipitation.

Snowfall

June through September are months without snowfall in Denver.

Daylight

In Denver, the average length of the day in August is 13.7h.

Sunshine

June through August, with an average of 11.8h of sunshine, are months with the most sunshine.

UV index

In Denver, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Denver?

The average high-temperature, in August, in Denver, Colorado, is 83.1°F (28.4°C), while the average low-temperature is 58.3°F (14.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines relative humidity and air temperature, in August is appraised at 82.8°F (28.2°C).

What is the average humidity in August in Denver?

In August, the average relative humidity in Denver, Colorado, is 42%.

How much does it rain in Denver in August?

In Denver, during August, the rain falls for 15.1 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When it does not snow in Denver?

June through September are months without snowfall in Denver.

What is the average length of the day in August in Denver?

In Denver, the average length of the day in August is 13.7h.

What is the month with the most sunshine in Denver?

June through August, with an average of 11.8h of sunshine, are months with the most sunshine in Denver.

How many hours of sunshine does Denver have in August?

In Denver, Colorado, the average sunshine in August is 11.8h.

How high is the UV index in August in Denver?

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in August
Denver, CO

Average temperature in August - Denver, CO
  • Average high temperature in August: 83.1°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (39.9°F).

  • Average low temperature in August: 58.3°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

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Average pressure in August
Denver, CO

Average pressure in August - Denver, CO
  • Average pressure in August: 30.01"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is April (29.91").

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Average wind speed in August
Denver, CO

Average wind speed in August - Denver, CO
  • Average wind speed in August: 5.7mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).

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Average humidity in August
Denver, CO

Average humidity in August - Denver, CO
  • Average humidity in August: 42%

The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is June (41%).

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Average rainfall in August
Denver, CO

Average rainfall in August - Denver, CO
  • Average rainfall in August: 1.1"

The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and December (0.39").

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Average rainfall days in August
Denver, CO

Average rainfall days in August - Denver, CO
  • Average rainfall days in August: 15.1 days

The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (3.7 days).

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Average snowfall in August
Denver, CO

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

The month with the highest snowfall is March (6.26").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Denver, CO

Average snowfall days in August - Denver, CO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (9.3 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Denver, CO

Average daylight in August / Average sunshine in August - Denver, CO
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 11.8h

Months with the most sunshine are June, July and August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.9h).

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Average sunshine days in August
Denver, CO

Average sunshine days in August - Denver, CO
  • Average sunshine days in August: 8.8 days

The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (5.6 days).

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Average UV index in August
Denver, CO

Average UV index in August - Denver, CO
  • Average UV index in August: 5

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Denver, CO

Average cloud cover in August - Denver, CO
  • Average cloud cover in August: 17

The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).

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Average visibility in August
Denver, CO

Average visibility in August - Denver, CO
  • Average visibility in August: 6mi

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

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