August weather forecast
McAlester, OK

As the closing month of summer, August retains the warmth of July and the characteristic summer feel. It carries on the streak of high temperatures and prolonged sunlight from the preceding month. However, rainfall starts to pick up again after the summer dryness that reached its zenith in July. Despite the slight increment in rainfall, the lofty temperatures make it a proliferation of clear, sunny days and vibrant, warm nights.

Temperature

August's presence in McAlester marks an average high-temperature of a still tropical 92.3°F (33.5°C), subtly varied from July's 92.7°F (33.7°C). In August, McAlester's temperature tends to fall to an average low of 71.1°F (21.7°C) during the night.

Heat index

For most parts of August, the heat index is appraised at a blisteringly hot 109.4°F (43°C). Be cautious: Heat exhaustion along with heat cramps are predicted. Heatstroke is a possible consequence of continuous physical effort.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. 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 particularly relevant to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The least humid month is August, with an average relative humidity of 66%.

Rainfall

In McAlester, during August, the rain falls for 12.7 days and regularly aggregates up to 2.95" (75mm) of precipitation. In McAlester, Oklahoma, during the entire year, the rain falls for 138.1 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

May through October are months without snowfall in McAlester.

Daylight

In August, the average length of the day is 13h and 26min.
On the first day of August in McAlester, sunrise is at 6:33 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:50 pm CDT.

Sunshine

With an average of 10.9h of sunshine, August has the most sunshine of the year.

UV index

The months with the highest UV index in McAlester are June through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 7 translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.