Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Entering August, Webster Groves's average high-temperature reads a warm 85.5°F (29.7°C), indicating a close resemblance to the previous month's climate. An average low-temperature of 67.1°F (19.5°C) is observed during the August nights.Heat index
During August, the heat index is calculated to be a torrid 95°F (35°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The average relative humidity in August is 75%.Rainfall
In Webster Groves, in August, during 14.2 rainfall days, 3.31" (84mm) of precipitation is typically accumulated. Throughout the year, there are 144.8 rainfall days, and 30.59" (777mm) of precipitation is accumulated.Snowfall
In Webster Groves, snow does not fall in April through October.Daylight
In Webster Groves, the average length of the day in August is 13h and 37min.On the first day of the month, sunrise is at 6:03 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:32 pm CDT.
Sunshine
In August, the average sunshine is 10.3h.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 risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August?
What is the average humidity in August in Webster Groves?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
How long on average sun shines in August?
What are the months with the highest UV index?
How high is the UV index in August?
Average temperature in August
Webster Groves, 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).
Average pressure in August
Webster Groves, 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).
Average wind speed in August
Webster Groves, 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).
Average humidity in August
Webster Groves, 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%).
Average rainfall in August
Webster Groves, 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").
Average rainfall days in August
Webster Groves, 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).
Average snowfall in August
Webster Groves, 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").
Average snowfall days in August
Webster Groves, 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).
Average daylight in August /
Average sunshine in August
Webster Groves, 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).
Average sunshine days in August
Webster Groves, 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).
Average UV index in August
Webster Groves, 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).
Average cloud cover in August
Webster Groves, 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).
Average visibility in August
Webster Groves, 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).
Webster Groves, Missouri, USA
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