September weather forecastHarpers Store, AL
September
Weather in September
The first month of the autumn, September, is still a tropical month in Harpers Store, Alabama, with an average temperature fluctuating between 88°F (31.1°C) and 68°F (20°C).Temperature
Entering September, the average high-temperature is recorded at a still tropical 88°F (31.1°C), exhibiting a minimal shift from August's 91.9°F (33.3°C). Harpers Store witnesses a consistent average low-temperature of 68°F (20°C) throughout September.Heat index
In September, the average heat index is computed to be a sweltering 102.2°F (39°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The average relative humidity in September is 75%.Rainfall
In Harpers Store, in September, during 17 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Harpers Store, during the entire year, the rain falls for 174.1 days and collects up to 36.02" (915mm) of precipitation.Snowfall
In Harpers Store, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:24 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:34 pm CDT.
Sunshine
In Harpers Store, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 6 in September transforms into this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harpers Store, AL
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in September: 68°F
The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Harpers Store, AL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Harpers Store, AL
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February, March and April (6.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Harpers Store, AL
- Average humidity in September: 75%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Harpers Store, AL
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is August (4.49").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in September
Harpers Store, AL
- Average rainfall days in September: 17 days
The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Harpers Store, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Harpers Store, AL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.4 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
Harpers Store, AL
- Average daylight in September: 12h and 18min
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: 8h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Harpers Store, AL
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (5.4 days).
Average UV index in September
Harpers Store, AL
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Harpers Store, AL
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in September
Harpers Store, AL
- Average visibility in September: 5mi
The months with the highest visibility are June and October (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September, November and December (5mi).
