September weather forecastPiney Grove, AR
September
Weather in September
September, the first month of the autumn in Piney Grove, is still a tropical month, with temperature in the range of an average high of 86.9°F (30.5°C) and an average low of 65.7°F (18.7°C).Temperature
A modest decline in the average high-temperature is seen during September, decreasing from a hot 93.2°F (34°C) in August to a still tropical 86.9°F (30.5°C). Piney Grove cools down to an average low-temperature of 65.7°F (18.7°C) throughout the month of September.Heat index
September's mean heat index is computed to be a torrid 98.6°F (37°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely vital to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. 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. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
The average relative humidity in September in Piney Grove 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
In September, the average length of the day in Piney Grove is 12h and 22min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:39 pm. On the last day of September, in Piney Grove, Arkansas, sunrise is at 7:08 am and sunset at 6:59 pm CDT.
Sunshine
In Piney Grove, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 6 in September translates into these instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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
Piney Grove, 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).
