August weather forecastWentzville, MO
August
Weather in August
August offers a continuation of the hot summer climate in Wentzville, with minimal variation from July. The temperature ascends to its second peak of 85.5°F (29.7°C), prior to the advent of eventual cooling. The continuity of rainfall manages the heat to a certain extent, averting any chances of severe drought. Despite the reduction in daylight hours, there’s abundant sunshine during the day. Light breezes provide necessary comfort during sweltering afternoons.Temperature
A minimal variation is noted in Wentzville's average high-temperature at the onset of August, reaching a moderately hot 85.5°F (29.7°C) from July's 87.1°F (30.6°C). An average low-temperature of 66°F (18.9°C) is observed during August nights.Heat index
August's mean heat index is calculated to be a torrid 96.8°F (36°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The average relative humidity in August in Wentzville is 76%.Rainfall
In Wentzville, in August, it is raining for 14.5 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, there are 152.1 rainfall days, and 32.01" (813mm) of precipitation is accumulated.Snowfall
In Wentzville, snow does not fall in May through October.Daylight
In Wentzville, the average length of the day in August is 13h and 38min.On the first day of August, sunrise is at 6:05 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:34 pm CDT.
Sunshine
In Wentzville, Missouri, the average sunshine in August is 10.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 6 during August leads to these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Wentzville, MO
- Average high temperature in August: 85.5°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in August: 66°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in August
Wentzville, MO
- Average pressure in August: 29.97"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
Wentzville, MO
- Average wind speed in August: 5.5mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in August
Wentzville, MO
- Average humidity in August: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Wentzville, MO
- Average rainfall in August: 3.07"
The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in August
Wentzville, MO
- Average rainfall days in August: 14.5 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in August
Wentzville, MO
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Wentzville, MO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Wentzville, MO
- Average daylight in August: 13h and 36min
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 18min
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 42min).
Average sunshine days in August
Wentzville, MO
- Average sunshine days in August: 14.7 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in August
Wentzville, 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, November and December (UV index 2).
Average cloud cover in August
Wentzville, 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
Wentzville, 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).
