September weather forecast and climate
Shirleys Crossroads, AL

Weather in September

The first month of the autumn, September, is also a hot month in Shirleys Crossroads, Alabama, with average temperature varying between 87.1°F (30.6°C) and 68°F (20°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still tropical 87.1°F (30.6°C). In September, in Shirleys Crossroads, the average low-temperature is 68°F (20°C).

Heat index

In September, the average heat index is appraised at a sweltering 99.9°F (37.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like wind, differences in body mass, height, and shape, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Shirleys Crossroads, in September, during 16.5 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. 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 Shirleys Crossroads, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine 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 threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in September in Shirleys Crossroads?

In Shirleys Crossroads, in September, the average high-temperature is 87.1°F (30.6°C), and the average low-temperature is 68°F (20°C). The average heat index (a.k.a. 'real feel', 'feels like'), that combines relative humidity and air temperature, in September is appraised at 99.9°F (37.7°C).

What is the average humidity in September in Shirleys Crossroads?

In Shirleys Crossroads, the average relative humidity in September is 74%.

How much does it rain in Shirleys Crossroads in September?

In September, in Shirleys Crossroads, Alabama, the rain falls for 16.5 days. Throughout September, 2.48" (63mm) of precipitation is accumulated.

When it does not snow in Shirleys Crossroads?

March through November are months without snowfall in Shirleys Crossroads.

How many hours of daylight does Shirleys Crossroads have in September?

The average length of the day in September in Shirleys Crossroads is 12.3h.

How long on average sun shines in September in Shirleys Crossroads?

In Shirleys Crossroads, Alabama, the average sunshine in September is 8.9h.

How high is the UV index in September in Shirleys Crossroads?

In Shirleys Crossroads, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.

Average temperature in September
Shirleys Crossroads, AL

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).

[Resources]

Average pressure in September
Shirleys Crossroads, AL

Average pressure in September - Shirleys Crossroads, AL
  • Average pressure in September: 29.99"

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June and August (29.97").

[Resources]

Average wind speed in September
Shirleys Crossroads, AL

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).

[Resources]

Average humidity in September
Shirleys Crossroads, AL

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%).

[Resources]

Average rainfall in September
Shirleys Crossroads, AL

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").

[Resources]

Average rainfall days in September
Shirleys Crossroads, AL

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).

[Resources]

Average snowfall in September
Shirleys Crossroads, AL

Average snowfall in September - Shirleys Crossroads, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.2").
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

[Resources]

Average snowfall days in September
Shirleys Crossroads, AL

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).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Shirleys Crossroads, AL

Average daylight in September / Average sunshine in September - Shirleys Crossroads, AL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is June (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.2h).

[Resources]

Average sunshine days in September
Shirleys Crossroads, AL

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).

[Resources]

Average UV index in September
Shirleys Crossroads, AL

Average UV index in September - Shirleys Crossroads, AL
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

[Resources]

Average cloud cover in September
Shirleys Crossroads, AL

Average cloud cover in September - Shirleys Crossroads, AL
  • Average cloud cover in September: 30

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).

[Resources]

Average visibility in September
Shirleys Crossroads, AL

Average visibility in September - Shirleys Crossroads, AL
  • Average visibility in September: 6mi

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).

[Resources]