Denver
Colorado, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
August, the last month of the summer, in Denver, is also a moderately hot 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 essentially the same as in July - a still moderately hot 83.1°F (28.4°C). The average low-temperature, in August, is 58.3°F (14.6°C).

Heat index

The average heat index is calculated to 82.8°F (28.2°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. 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', 'apparent temperature', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, metabolic differences, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Denver, the average relative humidity is 42%.

Rainfall

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

Snowfall

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

Daylight

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

Sunshine

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

UV index

The average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Denver?

In August, in Denver, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 58.3°F (14.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that factores the actual air temperature with the relative humidity, is estimated at 82.8°F (28.2°C).

What is the average humidity in August in Denver?

In August, the average relative humidity is 42%.

How many days does it rain in August in Denver?

In Denver, Colorado, in August, during 15.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow in Denver?

In Denver snow does not fall in June through September.

How many hours of daylight does Denver have in August?

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

What are the months with the most sunshine in Denver?

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

How many hours of sunshine does Denver have in August?

The average sunshine in August in Denver is 11.8h.

What is the UV index reading in August in Denver?

In Denver, Colorado, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in August - Denver, CO
  • Average high temperature in August: 28.4°C

The warmest month (with the highest average high temperature) is July (29.1°C).
The month with the lowest average high temperature is December (4.4°C).

  • Average low temperature in August: 14.6°C

The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is December (-6.3°C).

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%).

Average rainfall in August - Denver, CO
  • Average rainfall in August: 28mm

The wettest month (with the highest rainfall) is May (60mm).
Driest months (with the lowest rainfall) are January and December (10mm).

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 lowest number of rainy days is January (3.7 days).

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

The month with the highest snowfall is March (159mm).
Months with the lowest snowfall are June, July, August and September (0mm).

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 lowest number of snowfall days are June, July and August (0 days).

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 shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 11.8h

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

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).