September weather forecast
Dunlap, AR

The first month of the autumn, September, is also a hot month in Dunlap, Arkansas, with an average temperature varying between 86.9°F (30.5°C) and 65.7°F (18.7°C).

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from a tropical 93.2°F (34°C) in August to a still hot 86.9°F (30.5°C). In September, Dunlap experiences a temperature dip to an average of 65.7°F (18.7°C) at night.

Heat index

The heat index value for September is calculated to be a very hot 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
The heat index's values are generally associated with conditions in shade and light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In September, the average relative humidity is 71%.

Rainfall

September and November are months with the least rain in Dunlap, Arkansas, when the rain falls for 9.2 days and typically aggregates up to 0.87" (22mm) of rain.

Snowfall

Months with snowfall are January through March and September. September is the first month it typically snows in Dunlap. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Dunlap, during the entire year, snow falls for 3.1 days and aggregates up to 0.43" (11mm) of snow.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 6:48 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:59 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.