September weather forecast
Arkadelphia, AR

The arrival of September in Arkadelphia triggers the onset of the fall season. Temperatures exhibit a noticeable drop, now varying from 64.9°F (18.3°C) to 86.7°F (30.4°C). The weather increasingly becomes conducive to outdoor activities as intense summer heat subsides. Longer shadows and shorter days are indicative of the approaching equinox. September offers a delightful blend of warm days and cool nights, a testament to the changing seasons.

Temperature

The commencement of September in Arkadelphia indicates a gentle shift in the average high-temperature, receding from August's 92.8°F (33.8°C) to a still tropical 86.7°F (30.4°C). The nighttime temperature in Arkadelphia during September displays a significant divergence from daily peaks, averaging at a comfortable 64.9°F (18.3°C).

Heat index

For most parts of September, the heat index is estimated at a torrid 96.8°F (36°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The months with the lowest humidity in Arkadelphia are July through October, with an average relative humidity of 71%.

Rainfall

The month with the least rainfall in Arkadelphia is September, when the rain falls for 10.6 days and typically collects 1.14" (29mm) of precipitation.

Snowfall

In Arkadelphia, snow does not fall in March through December.

Daylight

The average length of the day in September in Arkadelphia is 12h and 22min.
On the first day of the month, sunrise is at 6:46 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:57 pm CDT.

Sunshine

In September, the average sunshine in Arkadelphia is 9.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.