Denver
Colorado, USA
Long-term weather forecast
Long-term weather forecast
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August weather forecast and Climate
Denver, CO

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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 is around 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 storms. August skies are clear for stargazing on many days.
Light summer clothing is usually sufficient in August.
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  • The average high temperature in August: 87.2°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is December (42.8°F).

  • The average low temperature in August: 57.9°F

The month with the highest average low temperature is July (58.9°F).
The coldest month (with the lowest average low temperature) is December (17.1°F).

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  • The 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%).

  • The average rainfall in August: 1.7"

The wettest month (with the highest rainfall) is July (2.2").
Driest months (with the lowest rainfall) are January, February and December (0.4").

  • The 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).

  • The average snowfall in August: 0"

The month with the highest snowfall is March (10.7").
Months with the lowest snowfall are June, July and August (0").

  • The 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).

  • The average daylight in August: 14h

Months with the longest days are June and July (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9h).

  • The 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).

  • The 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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