September weather forecastNashville, AR
September
Weather in September
The first month of the autumn, September, is still a tropical month in Nashville, Arkansas, with an average temperature ranging between max 86.5°F (30.3°C) and min 65.7°F (18.7°C).Temperature
A modest decline in the average high-temperature is seen during September, decreasing from 93°F (33.9°C) in August to a still tropical 86.5°F (30.3°C). In Nashville, September's nights observe an average temperature dip to a refreshing 65.7°F (18.7°C).Heat index
In September, the heat index is evaluated at a fiery hot 96.8°F (36°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Always consider that heat index estimations are for light winds and places in the shade. With exposure to direct sunlight, the heat index may be increased by up to 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. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. 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. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
In Nashville, the average relative humidity in September is 71%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 2.44" (62mm) of precipitation.Snowfall
In Nashville, snow does not fall in April through December.Daylight
In Nashville, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:09 am and sunset at 7:00 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In Nashville, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nashville, AR
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is January (50.9°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
Nashville, 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 (29.93"Hg).
Average wind speed in September
Nashville, AR
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Nashville, AR
- Average humidity in September: 71%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Nashville, AR
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is September (2.44").
Average rainfall days in September
Nashville, AR
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is March (15.5 days).
The month with the least rainy days is January (10.4 days).
Average snowfall in September
Nashville, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Nashville, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Nashville, 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 18min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Nashville, AR
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in September
Nashville, AR
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Nashville, AR
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Nashville, AR
- Average visibility in September: 6mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
