August weather forecast
Affton, MO

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Weather in August

Members of the Affton community can still expect to relish in the heat of the summer sun in August. Despite the high temperatures, there's an underlying knowledge of the impending end of summer and the onset of fall. It’s a period of cherishing the still long daylight hours and the freedom they bring before the transition of seasons. Catching a glimpse of a beautiful sunset sitting in the balmy evening air becomes a daily habit for many during August.

Temperature

The start of August marks an average high-temperature of a warm 85.6°F (29.8°C), hardly distinguishable from the conditions in July. August nights in Affton experience a consistent temperature drop to a refreshing 66.9°F (19.4°C).

Heat index

The heat index value during August is calculated to be a very hot 96.8°F (36°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in August is 75%.

Rainfall

In Affton, in August, it is raining for 14.1 days, with typically 3.39" (86mm) of accumulated precipitation. Throughout the year, there are 146.1 rainfall days, and 32.36" (822mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Affton.

Daylight

The average length of the day in August in Affton is 13h and 37min.
On the first day of August, sunrise is at 6:03 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

The average sunshine in August is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

How hot does it get in Affton in August?

The high-temperature in Affton during August is 85.6°F (29.8°C) and the low-temperature is 66.9°F (19.4°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 96.8°F (36°C).

What is the average humidity in August in Affton?

In Affton, Missouri, the average relative humidity in August is 75%.

How much does it rain in Affton in August?

In Affton, during August, the rain falls for 14.1 days and regularly aggregates up to 3.39" (86mm) of precipitation.

When it does not snow in Affton?

In Affton, Missouri, snow does not fall in April through October.

How many hours of daylight does Affton have in August?

The average day length in August is 13h and 37min.

When are sunrise and sunset in August in Affton?

In August, on the first day of the month, sunrise is at 6:03 am and sunset at 8:11 pm. On the last day of the month, in Affton, Missouri, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Affton have in August?

The average sunshine duration in August in Affton, Missouri, is 10.2h.

When is the highest UV index in Affton?

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

What is the UV index intensity in August in Affton?

In August, the average daily maximum UV index in Affton 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
Affton, MO

Average temperature in August - Affton, MO
  • Average high temperature in August: 85.6°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 (37.9°F).

  • Average low temperature in August: 66.9°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in August
Affton, MO

Average pressure in August - Affton, 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
Affton, MO

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

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Affton, MO

Average humidity in August - Affton, 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 (71%).

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Average rainfall in August
Affton, MO

Average rainfall in August - Affton, MO
  • Average rainfall in August: 3.39"

The wettest month (with the highest rainfall) is May (3.94").
The driest months (with the least rainfall) are February and November (1.77").

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Average rainfall days in August
Affton, MO

Average rainfall days in August - Affton, MO
  • Average rainfall days in August: 14.1 days

The month with the highest number of rainy days is July (16.9 days).
The months with the least rainy days are January and February (6.8 days).

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Average snowfall in August
Affton, MO

Average snowfall in August - Affton, 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
Affton, MO

Average snowfall days in August - Affton, MO
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Affton, MO

Average daylight in August / Average sunshine in August - Affton, 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 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in August
Affton, MO

Average sunshine days in August - Affton, MO
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (11.6 days).

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Average UV index in August
Affton, MO

Average UV index in August - Affton, 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
Affton, MO

Average cloud cover in August - Affton, MO
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in August
Affton, MO

Average visibility in August - Affton, 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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Affton, Missouri, USA

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