Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from 94.6°F (34.8°C) in August to a still tropical 88.5°F (31.4°C). Heflin experiences a steady low-temperature of 67.3°F (19.6°C) throughout September.Heat index
September's mean heat index is evaluated at a fiery hot 102.2°F (39°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Heat index determinations are made taking into account the shade and light air movements. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In September, the average relative humidity is 71%.Rainfall
The months with the least rainfall are July and September Rain falls for 14.1 days and accumulates 2.52" (64mm) of rain.Snowfall
In Heflin, Louisiana, snow does not fall in April through November.Daylight
In Heflin, the average length of the day in September is 12h and 22min.On the first day of September in Heflin, sunrise is at 6:48 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:58 pm CDT.
Sunshine
In Heflin, the average sunshine in September is 9.4h.UV index
In Heflin, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 5 in September leads to these recommendations:
Guard yourself - Avoiding sunburn is suggested. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
How hot is September in Heflin?
What is the average humidity in September in Heflin?
What is the driest month in Heflin?
How much does it rain in Heflin in September?
When it does not snow in Heflin?
What is the average length of the day in September in Heflin?
What time are sunrise and sunset in September in Heflin?
How many hours of sunshine does Heflin have in September?
What is the UV index intensity in September in Heflin?
Average temperature in September
Heflin, LA
- Average high temperature in September: 88.5°F
The warmest months (with the highest average high temperature) are July and August (94.6°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 67.3°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Heflin, LA
- Average pressure in September: 29.98"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
Heflin, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Heflin, LA
- Average humidity in September: 71%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Heflin, LA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (4.17").
The driest months (with the least rainfall) are July and September (2.52").
Average rainfall days in September
Heflin, LA
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in September
Heflin, LA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Heflin, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Heflin, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Heflin, LA
- Average sunshine days in September: 14 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (12.9 days).
Average UV index in September
Heflin, LA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Heflin, LA
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in September
Heflin, LA
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
Heflin, Louisiana, USA
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