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 is a hot summer month in Denver with average temperatures in the 57°F (13.9°C) to 86°F (30°C). Daylight lasts for 14 hours with plenty of sunshine, although the temperatures seldom go above 90°F (32.2°C). Nights are warm and rarely drop to 40°F (4.4°C).
About 2" (50.8mm) of rain usually occurs in August - sometimes an inch may fall in a day during a storm. Tornadoes are less familiar to the west of Interstate 25, but the eastern parts witness a few thunderstorms. August skies are clear for stargazing on many days.
Light summer clothing is usually sufficient in August.

What is the temperature in August in Denver?

In Denver, Colorado, in August, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 57.9°F (14.4°C).

How many days does it rain in August in Denver?

In Denver, Colorado, in August, during 8.6 rainfall days, typically 1.7" (42.9mm) of precipitation is accumulated.

Does it snow in Denver in August?

In Denver, in August, it doesn't snow. In September, it regularly snows.
Average temperature in August - Denver, CO
  • Average high temperature in August: 30.7°C

The warmest month (with the highest average high temperature) is July (31.9°C).
The month with the lowest average high temperature is December (6°C).

  • Average low temperature in August: 14.4°C

The month with the highest average low temperature is July (14.9°C).
The coldest month (with the lowest average low temperature) is December (-8.3°C).

Average humidity in August - Denver, CO
  • Average humidity in August: 49.3%

The month with the highest relative humidity is December (56.6%).
The month with the lowest relative humidity is July (47.8%).

Average rainfall in August - Denver, CO
  • Average rainfall in August: 42.9mm

The wettest month (with the highest rainfall) is July (54.9mm).
The driest month (with the lowest rainfall) is December (8.9mm).

Average rainfall days in August - Denver, CO
  • Average rainfall days in August: 8.6 days

The month with the highest number of rainy days is May (9.4 days).
Months with the lowest number of rainy days are January and December (4.1 days).

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

The month with the highest snowfall is March (271.8mm).
Months with the lowest snowfall are June, July and August (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 March (5.8 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: 9.9h

Months with most sunshine are June and July (Average sunshine: 10.5h).
The month with least sunshine is December (Average sunshine: 6.3h).

Average UV index in August - Denver, CO
  • Average UV index in August: 10

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 2).

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