August weather forecast
Des Peres, MO

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Weather in August

August, the last month of the summer in Des Peres, is also a moderately hot month, with an average temperature fluctuating between 67.1°F (19.5°C) and 85.5°F (29.7°C).

Temperature

With August's advent, Des Peres sees an average high-temperature of a moderately hot 85.5°F (29.7°C), subtly shifted from July's 86.9°F (30.5°C). Throughout the nights in August, Des Peres experiences an average low-temperature of 67.1°F (19.5°C).

Heat index

The heat index for August is computed to be a sweltering 95°F (35°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. 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 'feels like' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in August in Des Peres, Missouri, is 75%.

Rainfall

In Des Peres, in August, it is raining for 14.2 days, with typically 3.31" (84mm) of accumulated precipitation. In Des Peres, during the entire year, the rain falls for 144.8 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Des Peres, Missouri, the average length of the day in August is 13h and 37min.
On the first day of August, sunrise is at 6:04 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

Sunshine

In Des Peres, the average sunshine in August is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Des Peres. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 suggests this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot does it get in Des Peres in August?

The high-temperature, in August, in Des Peres, records 85.5°F (29.7°C), while the low-temperature is 67.1°F (19.5°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is computed to be 95°F (35°C).

What is the average humidity in August in Des Peres?

In August, the average relative humidity is 75%.

How many days does it rain in August in Des Peres?

In Des Peres, Missouri, in August, it is raining for 14.2 days, with typically 3.31" (84mm) of accumulated precipitation.

When it does not snow in Des Peres?

April through October are months without snowfall.

How many hours of daylight does Des Peres have in August?

In Des Peres, Missouri, the average day length in August is 13h and 37min.

What time are sunrise and sunset in August in Des Peres?

On the first day of August, sunrise is at 6:04 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

How long on average sun shines in August in Des Peres?

In August, the average sunshine duration is 10.3h.

What is the month with the highest UV index in Des Peres?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in August in Des Peres?

In Des Peres, Missouri, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Des Peres, MO

Average temperature in August - Des Peres, MO
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in August: 67.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in August
Des Peres, MO

Average pressure in August - Des Peres, MO
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Des Peres, MO

Average wind speed in August - Des Peres, MO
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Des Peres, MO

Average humidity in August - Des Peres, MO
  • Average humidity in August: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Des Peres, MO

Average rainfall in August - Des Peres, MO
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").

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Average rainfall days in August
Des Peres, MO

Average rainfall days in August - Des Peres, MO
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).

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Average snowfall in August
Des Peres, MO

Average snowfall in August - Des Peres, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Des Peres, MO

Average snowfall days in August - Des Peres, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Des Peres, MO

Average daylight in August / Average sunshine in August - Des Peres, MO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in August
Des Peres, MO

Average sunshine days in August - Des Peres, MO
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in August
Des Peres, MO

Average UV index in August - Des Peres, MO
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in August
Des Peres, MO

Average cloud cover in August - Des Peres, MO
  • Average cloud cover in August: 27

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in August
Des Peres, MO

Average visibility in August - Des Peres, MO
  • 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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Des Peres, Missouri, USA

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