August weather forecast
Fort Smith, AR

As August begins, there is a feeling of the summer starting to wind down. Even though the weather is still warm, the city of Fort Smith prepares for a slow transition into autumn, especially towards the end of the month. Community gatherings, baseball games, and swimming still hold sway over the weekends. The summer sunshine continues to blaze with the temperature regime fluctuating from 69.4°F (20.8°C) to 91.9°F (33.3°C). Coordinating outdoor activities in the early morning or evening assists in avoiding the intense, midday sun.

Temperature

The advent of August observes an average high-temperature of a still hot 91.9°F (33.3°C), nearly identical to July's 93.4°F (34.1°C). The nighttime temperature during August exhibits a clear drop from daytime highs, settling at an agreeable 69.4°F (20.8°C).

Heat index

The heat index for August is evaluated at an extremely hot 111.2°F (44°C). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

July and August, with an average relative humidity of 70%, are the least humid months.

Rainfall

In Fort Smith, in August, during 13.1 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, in Fort Smith, there are 131.9 rainfall days, and 25.51" (648mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Fort Smith, Arkansas.

Daylight

In Fort Smith, Arkansas, the average length of the day in August is 13h and 27min.
On the first day of the month, sunrise is at 6:26 am and sunset at 8:20 pm. On the last day of August, in Fort Smith, sunrise is at 6:49 am and sunset at 7:45 pm CDT.

Sunshine

The average sunshine in August in Fort Smith is 10.8h.

UV index

The average daily maximum UV index in August in Fort Smith, Arkansas, is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.