August weather forecast
Westminster, CO

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Weather in August

August, the last month of the summer in Westminster, is another tropical month, with temperature in the range of an average high of 86.2°F (30.1°C) and an average low of 59.5°F (15.3°C).

Temperature

Westminster observes a minor difference in average high-temperatures between July's 87.4°F (30.8°C) and August's 86.2°F (30.1°C). Compared to daytime temperatures, Westminster's temperature drops significantly, averaging a moderate 59.5°F (15.3°C) during the nights of August.

Heat index

The heat index value for August is estimated at a tropical 86°F (30°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

June and August, with an average relative humidity of 40%, are the least humid months.

Rainfall

In Westminster, in August, it is raining for 11.6 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 101.9 rainfall days, and 10.91" (277mm) of precipitation is accumulated.

Snowfall

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

Daylight

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

Sunshine

In Westminster, the average sunshine in August is 11.7h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

How hot is August in Westminster?

The high-temperature, in August, in Westminster, is 86.2°F (30.1°C), while the low-temperature averages to 59.5°F (15.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the least humid month in Westminster?

June and August, with an average relative humidity of 40%, are the least humid months in Westminster.

What is the average humidity in August in Westminster?

In August, the average relative humidity in Westminster is 40%.

How much does it rain in Westminster in August?

In August, in Westminster, the rain falls for 11.6 days. Throughout August, 0.79" (20mm) of precipitation is accumulated.

When it does not snow in Westminster?

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

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

The average day length in August is 13h and 41min.

When is the sunrise / sunset in August in Westminster?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 8:13 pm. On the last day of the month, in Westminster, Colorado, sunrise is at 6:27 am and sunset at 7:32 pm MDT.

How many hours of sunshine does Westminster have in August?

In Westminster, Colorado, the average sunshine duration in August is 11.7h.

What are the months with the highest UV index in Westminster?

The months with the highest UV index in Westminster, Colorado, are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Westminster?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Westminster, CO

Average temperature in August - Westminster, CO
  • Average high temperature in August: 86.2°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure in August
Westminster, CO

Average pressure in August - Westminster, CO
  • Average pressure in August: 30.01"Hg

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

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Average wind speed in August
Westminster, CO

Average wind speed in August - Westminster, CO
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest months (with the lowest average wind speed) are August, September and December (5.8mph).

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Average humidity in August
Westminster, CO

Average humidity in August - Westminster, CO
  • Average humidity in August: 40%

The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (40%).

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Average rainfall in August
Westminster, CO

Average rainfall in August - Westminster, CO
  • Average rainfall in August: 0.79"

The wettest month (with the highest rainfall) is May (2.05").
The driest months (with the least rainfall) are January and December (0.35").

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Average rainfall days in August
Westminster, CO

Average rainfall days in August - Westminster, CO
  • Average rainfall days in August: 11.6 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in August
Westminster, CO

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

The month with the highest snowfall is April (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Westminster, CO

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

The month with the highest number of snowfall days is February (9.4 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
Westminster, CO

Average daylight in August / Average sunshine in August - Westminster, CO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 11h and 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days in August
Westminster, CO

Average sunshine days in August - Westminster, CO
  • Average sunshine days in August: 12.4 days

The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index in August
Westminster, CO

Average UV index in August - Westminster, CO
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (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
Westminster, CO

Average cloud cover in August - Westminster, CO
  • Average cloud cover in August: 16

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
Westminster, CO

Average visibility in August - Westminster, 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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Westminster, Colorado, USA

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