August weather forecast
Kirkwood, MO

In August, the high summer temperatures persist, quite akin to the July conditions, making it a comparatively warmer month. Kirkwood residents spend their time enjoying outdoor activities, maximizing the benefits of the extended daylight hours. The weather stays consistent throughout August, with sporadic rain showers providing brief relief from the heat. August represents a pivotal point in Kirkwood's annual weather cycle as it marks the end of summer and slowly paves the way for fall. September brings about a noticeable shift in weather patterns, with temperatures gradually receding.

Temperature

The onset of August in Kirkwood brings with it an average high-temperature of a moderately hot 85.5°F (29.7°C), showing a negligible variation from the month before. August nights cool down to an average low-temperature of 67.1°F (19.5°C).

Heat index

The average heat index in August is calculated to be a fiery hot 95°F (35°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In Kirkwood, during August, the rain falls for 14.2 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, in Kirkwood, there are 144.8 rainfall days, and 30.59" (777mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Kirkwood.

Daylight

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

Sunshine

In August, the average sunshine in Kirkwood 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 health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.