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 marks an average high-temperature of a warm 82.9°F (28.3°C), hardly differing from August's 87.8°F (31°C). Throughout the month of September, the average temperature dips to a comfortable 63.3°F (17.4°C) at night.Heat index
The heat index value for September is estimated at a hot 89.6°F (32°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Heflin, in September, it is raining for 13.8 days, with typically 3.15" (80mm) of accumulated precipitation. Throughout the year, there are 186.4 rainfall days, and 42.36" (1076mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Heflin.Daylight
In September, the average length of the day in Heflin, Alabama, is 12h and 22min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:07 pm. On the last day of September, in Heflin, sunrise is at 6:36 am and sunset at 6:27 pm CDT.
Sunshine
In Heflin, Alabama, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Heflin is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
How hot is it in Heflin in September?
What is the average humidity in September in Heflin?
How much does it rain in Heflin in September?
When it does not snow in Heflin?
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?
How high is the UV index in September in Heflin?
Average temperature in September
Heflin, AL
- Average high temperature in September: 82.9°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (50.4°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Heflin, AL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Heflin, AL
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Heflin, AL
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Heflin, AL
- Average rainfall in September: 3.15"
The wettest month (with the highest rainfall) is August (4.45").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in September
Heflin, AL
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (23.1 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Heflin, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Heflin, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Heflin, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Heflin, AL
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (6.8 days).
Average UV index in September
Heflin, AL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Heflin, AL
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Heflin, AL
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, July, August, September and December (5mi).
Heflin, Alabama, USA
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