August weather forecast
Denver, CO

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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



Denver's August closely follows July, persisting with similar summer weather patterns. August's temperature maintains high marks, with a slight decrease in the average high temperature to 83.1°F (28.4°C), assuring prolonged summer activities. The city, despite experiencing fewer rain showers, continues to retain ample sunshine hours, allowing residents and tourists to pursue extended outdoor ventures. Notably, August exhibits less total rainfall compared to July, indicating a shift back towards drier weather conditions. Thus, Denver's August weather is characterized by warm days, clear skies, and comfortable summer nights, the perfect setting for late summer get-togethers.

Temperature

The shift from July to August in Denver is characterized by an average high-temperature of a still warm 83.1°F (28.4°C), not significantly different from the 84.4°F (29.1°C) of July. Denver witnesses a consistent, sharp contrast from the daytime highs, with an average low-temperature of 58.3°F (14.6°C) throughout August.

Heat index

In August, the heat index is appraised at 82.4°F (28°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

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

Rainfall

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

Snowfall

In Denver, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 41min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:12 pm. On the last day of August, sunrise is at 6:27 am and sunset at 7:32 pm MDT.

Sunshine

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

UV index

In Denver, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 5 during August, leads to the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot is it in Denver in August?

August temperatures in Denver vary between a high-temperature of 83.1°F (28.4°C) and a low-temperature of 58.3°F (14.6°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 82.4°F (28°C).

What is the average humidity in August in Denver?

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

How much does it rain in Denver in August?

In August, in Denver, the rain falls for 15.1 days. Throughout August, 1.1" (28mm) of precipitation is accumulated.

When it does not snow in Denver?

In Denver, snow does not fall in June through September.

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

In Denver, Colorado, the average day length in August is 13h and 41min.

When is the sunrise / sunset in August in Denver?

On the first day of August in Denver, sunrise is at 5:59 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm MDT.

What are the months with the most sunshine in Denver?

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

How long on average sun shines in August in Denver?

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

What is the UV index reading in August in Denver?

The average daily maximum UV index in August in Denver, Colorado, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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").
The 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).
The 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: 13h and 4min

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 24min).

  • Average sunshine in August: 11h and 5min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).

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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

The months with the highest UV index are June and July (UV index 6).
The 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

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

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Denver, Colorado, USA

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