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 onset of September brings a small shift in high-temperatures, falling from a moderately hot 85.8°F (29.9°C) in August to a still warm 79.9°F (26.6°C). During September, Heflin witnesses a consistent average low-temperature of 61.2°F (16.2°C).Humidity
In Heflin, the average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall in Heflin. Rain falls for 12.6 days and accumulates 1.22" (31mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Heflin is 12h and 25min.On the first day of September, sunrise is at 6:18 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:32 pm CDT.
Sunshine
In Heflin, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Heflin is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 5 in September transforms into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Heflin in September?
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?
Does it snow in Heflin in September?
How many hours of daylight does Heflin have in September?
When is the sunrise / sunset in September in Heflin?
How long on average sun shines in September in Heflin?
What is the UV index reading in September in Heflin?
Average temperature in September
Heflin, KY
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in September
Heflin, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Heflin, KY
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in September
Heflin, KY
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Heflin, KY
- Average rainfall in September: 1.22"
The wettest months (with the highest rainfall) are February and April (2.68").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in September
Heflin, KY
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Heflin, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Heflin, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heflin, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are June and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Heflin, KY
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (12 days).
Average UV index in September
Heflin, KY
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Heflin, KY
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in September
Heflin, KY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Heflin, Kentucky, USA
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