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
In September, Jack notes an average high-temperature of a still tropical 86.9°F (30.5°C), hardly different from the preceding month. In the month of September, Jack's average low-temperature falls to a pleasant 68.9°F (20.5°C).Heat index
In September, the heat index is computed to be a torrid 98.6°F (37°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In Jack, the average relative humidity in September is 73%.Rainfall
In Jack, during September, the rain falls for 14.5 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 150.2 rainfall days, and 21.18" (538mm) of precipitation is accumulated.Snowfall
In Jack, snow does not fall in March through December.Daylight
In September, the average length of the day is 12h and 21min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:07 pm. On the last day of September, sunrise is at 6:37 am and sunset at 6:29 pm CDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
In Jack, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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 Jack have in September?
What time are sunrise and sunset in September in Jack?
How many hours of sunshine does Jack have in September?
What is the UV index reading in September?
Average temperature in September
Jack, AL
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (57.7°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in September
Jack, 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
Jack, AL
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Jack, AL
- Average humidity in September: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Jack, AL
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is August (3.19").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Jack, AL
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (6.8 days).
Average snowfall in September
Jack, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Jack, AL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Jack, 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 48min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Jack, AL
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (7.3 days).
Average UV index in September
Jack, AL
- Average UV index in September: 6
The months with the highest UV index are May, 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
Jack, AL
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Jack, 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).
Jack, Alabama, USA
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