September weather forecast and climate
Saint Stephens, AL

Weather in September

September, the first month of the autumn, in Saint Stephens, is still a hot month, with average temperature varying between 68°F (20°C) and 88.5°F (31.4°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still hot 88.5°F (31.4°C). In Saint Stephens, the average low-temperature is 68°F (20°C).

Heat index

The average heat index is calculated to a scorching 104.7°F (40.4°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, metabolic differences, clothing), and activity. 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. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity in Saint Stephens is 75%.

Rainfall

In September, in Saint Stephens, the rain falls for 16.5 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Saint Stephens, there are 173.9 rainfall days, and 35.63" (905mm) of precipitation is accumulated.

Snowfall

In Saint Stephens snow does not fall in April through November.

Daylight

In September, the average length of the day in Saint Stephens is 12.3h.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Saint Stephens?

In Saint Stephens, in September, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 68°F (20°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines air temperature and relative humidity, is estimated at 104.7°F (40.4°C).

What is the average humidity in September in Saint Stephens?

The average relative humidity in September in Saint Stephens, Alabama, is 75%.

How much does it rain in Saint Stephens in September?

In September, in Saint Stephens, Alabama, the rain falls for 16.5 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

When it does not snow in Saint Stephens?

April through November are months without snowfall in Saint Stephens.

How many hours of daylight does Saint Stephens have in September?

In September, the average length of the day is 12.3h.

How long on average sun shines in September in Saint Stephens?

In Saint Stephens, Alabama, the average sunshine in September is 8.8h.

How high is the UV index in September in Saint Stephens?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Saint Stephens, AL

Average temperature in September - Saint Stephens, AL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

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Average pressure in September
Saint Stephens, AL

Average pressure in September - Saint Stephens, AL
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.96").

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Average wind speed in September
Saint Stephens, AL

Average wind speed in September - Saint Stephens, AL
  • Average wind speed in September: 4.4mph

The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

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Average humidity in September
Saint Stephens, AL

Average humidity in September - Saint Stephens, 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%).

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Average rainfall in September
Saint Stephens, AL

Average rainfall in September - Saint Stephens, AL
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is July (4.41").
The driest month (with the least rainfall) is November (2.05").

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Average rainfall days in September
Saint Stephens, AL

Average rainfall days in September - Saint Stephens, AL
  • Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is November (8 days).

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Average snowfall in September
Saint Stephens, AL

Average snowfall in September - Saint Stephens, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.16").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Saint Stephens, AL

Average snowfall days in September - Saint Stephens, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.5 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Saint Stephens, AL

Average daylight in September / Average sunshine in September - Saint Stephens, 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: 8.8h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Saint Stephens, AL

Average sunshine days in September - Saint Stephens, AL
  • Average sunshine days in September: 11.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (4.4 days).

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Average UV index in September
Saint Stephens, AL

Average UV index in September - Saint Stephens, 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).

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Average cloud cover in September
Saint Stephens, AL

Average cloud cover in September - Saint Stephens, AL
  • Average cloud cover in September: 34

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in September
Saint Stephens, AL

Average visibility in September - Saint Stephens, AL
  • Average visibility in September: 5mi

Months with the highest visibility are June and October (6mi).
Months with the lowest visibility are January, February, March, April, May, July, August, September, November and December (5mi).

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