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 ushering in of September brings an average high-temperature of a still tropical 87.1°F (30.6°C), closely mirroring the 91.4°F (33°C) of August. During September, Rosemary's temperature falls to a steady low-temperature average of 67.1°F (19.5°C).Heat index
During September, the heat index is calculated to be a fiery hot 98.6°F (37°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The average relative humidity in September is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 2.2" (56mm) of precipitation.Snowfall
March through October are months without snowfall in Rosemary.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:35 pm CDT.
Sunshine
In September, the average sunshine in Rosemary is 9.2h.UV index
The average daily maximum UV index in September in Rosemary is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 during September translates into the following guidance:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
How hot is September in Rosemary?
What is the average humidity in September in Rosemary?
What is the driest month in Rosemary?
How much does it rain in Rosemary in September?
When it does not snow in Rosemary?
How many hours of daylight does Rosemary have in September?
When are sunrise and sunset in September in Rosemary?
How many hours of sunshine does Rosemary have in September?
What is the UV index intensity in September in Rosemary?
Average temperature in September
Rosemary, AL
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (53.4°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Rosemary, AL
- Average pressure in September: 29.99"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
Rosemary, AL
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Rosemary, AL
- Average humidity in September: 71%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Rosemary, AL
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is April (4.17").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Rosemary, AL
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Rosemary, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Rosemary, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.2 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
Rosemary, 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: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Rosemary, AL
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (21.1 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Rosemary, 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 and December (UV index 3).
Average cloud cover in September
Rosemary, AL
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 29).
Average visibility in September
Rosemary, 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).
Rosemary, Alabama, USA
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