September weather forecastPrescott, AR

Weather in September

September brings to Prescott, Arkansas a gradual, yet discernible retreat from the summer heat, with temperatures dropping to a more pleasant 86.9°F (30.5°C) peak. The month is characteristically marked by reduced rainfall and a slight decrease in humidity. The daylight hours start to shrink, heralding the onset of autumn. A subtle uptick in wind speed and a decrease in UV index further underscore the impending seasonal change.

Temperature

The move into September in Prescott indicates a slight reduction in the average high-temperature, down from August's 93.2°F (34°C) to a still tropical 86.9°F (30.5°C). Prescott experiences a nighttime temperature average of 65.7°F (18.7°C) during September.

Heat index

The average heat index in September is calculated to be a very hot 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In September, the average relative humidity is 71%.

Rainfall

September and November are months with the least rain 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 Prescott. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Prescott, 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 6:47 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:58 pm CDT.

Sunshine

The average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index in Prescott is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.