September weather forecastShirleys Crossroads, AL
September
Weather in September
September, the first month of the autumn in Shirleys Crossroads, is still a tropical month, with an average temperature ranging between min 68°F (20°C) and max 87.1°F (30.6°C).Temperature
The arrival of September is marked by an average high-temperature of a still tropical 87.1°F (30.6°C), bearing a close resemblance to August. In the month of September, Shirleys Crossroads records a consistent average low-temperature of 68°F (20°C).Heat index
September's heat index is evaluated at a fiery hot 100.4°F (38°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In Shirleys Crossroads, the average relative humidity in September is 74%.Rainfall
In Shirleys Crossroads, Alabama, during September, the rain falls for 16.5 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 175.6 rainfall days, and 35.87" (911mm) of precipitation is accumulated.Snowfall
In Shirleys Crossroads, snow does not fall in March through November.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 7:08 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:30 pm CDT.
Sunshine
In Shirleys Crossroads, Alabama, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 during September leads to these advisories:
Deflect overexposure. Sun protection is a necessity. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shirleys Crossroads, AL
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (56.7°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is August (72.3°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).
Average pressure in September
Shirleys Crossroads, 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
Shirleys Crossroads, AL
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Shirleys Crossroads, AL
- Average humidity in September: 74%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Shirleys Crossroads, AL
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is August (4.37").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
Shirleys Crossroads, AL
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Shirleys Crossroads, 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 and November (0").
Average snowfall days in September
Shirleys Crossroads, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Shirleys Crossroads, 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 54min
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
Shirleys Crossroads, AL
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (5.4 days).
Average UV index in September
Shirleys Crossroads, 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
Shirleys Crossroads, AL
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Shirleys Crossroads, AL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
