August weather forecast
University City, MO

August is another hot summer month in University City but indicates the end of the intense heat. The average temperature high drops slightly to 85.5°F (29.7°C), offering some respite from July's peak. The declining temperature is indicative of the impending arrival of autumn. Despite being buried under the heat, there are ample opportunities for summer fun before autumn sets in. Some rainfall relief comes to University City in August, but this has little effect on the ongoing fervor of summer activities.

Temperature

The shift from July to August is characterized by an average high-temperature of a moderately hot 85.5°F (29.7°C), not significantly different from the 86.9°F (30.5°C) of July. In University City, the average low-temperature during the month of August is a comfortable 67.1°F (19.5°C).

Heat index

The heat index value during August is estimated at a very hot 95°F (35°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In University City, the average relative humidity in August is 75%.

Rainfall

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

Snowfall

April through October are months without snowfall.

Daylight

In University City, the average length of the day in August is 13h and 38min.
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

The average sunshine in August is 10.3h.

UV index

The months with the highest UV index in University City are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.