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
Cooper ushers in September with an average high-temperature of a still hot 86°F (30°C), showing a close resemblance to the previous month. Cooper throughout September, experiences an average nighttime temperature of 66.7°F (19.3°C).Heat index
For most parts of September, the heat index is calculated to be a very hot 96.8°F (36°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. 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.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In Cooper, the average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 14.1 days and accumulates 2.17" (55mm) of precipitation.Snowfall
In Cooper, Alabama, snow does not fall in April through October.Daylight
The average length of the day in September in Cooper is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:10 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:31 pm CDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
In Cooper, Alabama, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September in Cooper?
How many hours of sunshine does Cooper have in September?
How high is the UV index in September?
Average temperature in September
Cooper, AL
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (52.9°F).
- Average low temperature in September: 66.7°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37°F).
Average pressure in September
Cooper, AL
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Cooper, AL
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in September
Cooper, AL
- Average humidity in September: 73%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Cooper, AL
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is April (3.86").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Cooper, AL
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in September
Cooper, AL
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Cooper, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.9 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
Cooper, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Cooper, AL
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in September
Cooper, AL
- Average UV index in September: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Cooper, AL
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 46).
The months with the least cloud cover are September and October (Cloud cover 30).
Average visibility in September
Cooper, AL
- 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).
Cooper, Alabama, USA
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