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 advent of September sees the average high-temperature at a still tropical 88.3°F (31.3°C), subtly shifted from August's 92.3°F (33.5°C). Throughout September, an average low-temperature of 68°F (20°C) is experienced.Heat index
The heat index value for September is computed to be an extremely hot 104°F (40°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.Always consider that heat index estimations are for light winds and places in the shade. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
In McWer, the average relative humidity in September is 75%.Rainfall
In McWer, during September, the rain falls for 16.7 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 177 rainfall days, and 35.75" (908mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of September in McWer, sunrise is at 6:26 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:36 pm CDT.
Sunshine
In McWer, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. 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
How hot does it get in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does McWer have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does McWer have in September?
What is the UV index intensity in September?
Average temperature in September
McWer, AL
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (56.7°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
McWer, AL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
McWer, AL
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).
Average humidity in September
McWer, 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
McWer, AL
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
McWer, AL
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is July (23.7 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in September
McWer, AL
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
McWer, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
McWer, AL
- Average daylight in September: 12h and 2min
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 5min
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: 5h and 6min).
Average sunshine days in September
McWer, AL
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in September
McWer, 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
McWer, 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
McWer, 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).
McWer, Alabama, USA
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