September weather forecastArcadia, AR
September
Weather in September
The first month of the autumn, September, is still a tropical month in Arcadia, Arkansas, with an average temperature varying between 65.7°F (18.7°C) and 86.9°F (30.5°C).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's tropical 93.2°F (34°C) to a still hot 86.9°F (30.5°C). Arcadia, in the month of September, anticipates a consistent average low-temperature of 65.7°F (18.7°C).Heat index
For most parts of September, the heat index is computed to be a sweltering 98.6°F (37°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
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
January through March and September are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 3.1 snowfall days, and 0.43" (11mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:59 pm CDT.
Sunshine
In Arcadia, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arcadia, AR
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in September
Arcadia, AR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Arcadia, AR
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Arcadia, AR
- Average humidity in September: 71%
The months with the highest relative humidity are February, March and December (80%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Arcadia, AR
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is April (1.97").
The driest months (with the least rainfall) are September and November (0.87").
Average rainfall days in September
Arcadia, AR
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (13.1 days).
The month with the least rainy days is October (7.8 days).
Average snowfall in September
Arcadia, AR
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are April, May, June, July, August, October, November and December (0").
Average snowfall days in September
Arcadia, AR
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Arcadia, AR
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Arcadia, AR
- Average sunshine days in September: 17 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is February (15.2 days).
Average UV index in September
Arcadia, AR
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Arcadia, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).
Average visibility in September
Arcadia, AR
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
