August weather forecast
Rolla, MO

August continues with the prevailing hot weather pattern, although the heat gradually wanes as the month progresses. The longer days and lesser cloud coverage also contribute to the prevailing high temperatures. However, by the end of the month, the impending transition to fall can be felt in the air as daylight hours begin to shorten. The outdoor activities enjoyed in the summer months continue, although with a slight dip in temperature to 87.3°F (30.7°C) as compared to July.

Temperature

As July transitions into August, Rolla records an average high-temperature of a still tropical 87.3°F (30.7°C), showing a gentle shift from the preceding month. Rolla, during the month of August, experiences an average low-temperature of 65.8°F (18.8°C).

Heat index

The heat index in August is estimated at a fiery hot 100.4°F (38°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in August is 74%.

Rainfall

In Rolla, during August, the rain falls for 15.2 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Rolla, Missouri, during the entire year, the rain falls for 147.2 days and collects up to 31.02" (788mm) of precipitation.

Snowfall

May through September are months without snowfall in Rolla.

Daylight

In August, the average length of the day in Rolla, Missouri, is 13h and 35min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of August, in Rolla, sunrise is at 6:36 am and sunset at 7:37 pm CDT.

Sunshine

In Rolla, Missouri, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 6 in August leads to these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.