September weather forecast
Irvington, AL

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Weather in September

The first month of the autumn, September, is still a hot month in Irvington, Alabama, with an average temperature varying between 73.9°F (23.3°C) and 86.9°F (30.5°C).

Temperature

During September, the average high-temperature is a still tropical 86.9°F (30.5°C), maintaining a close resemblance to that of the preceding month. Throughout September nights, Irvington registers an average low-temperature of 73.9°F (23.3°C).

Heat index

September's mean heat index is appraised at a very hot 98.6°F (37°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Irvington, during September, the rain falls for 17.9 days and regularly aggregates up to 3.94" (100mm) of precipitation. In Irvington, during the entire year, the rain falls for 173.5 days and collects up to 40.98" (1041mm) of precipitation.

Snowfall

In Irvington, snow does not fall in February through December.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of September, sunrise is at 6:29 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:39 pm CDT.

Sunshine

In Irvington, the average sunshine in September is 9.8h.

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 exposure to the Sun's UV radiation for the ordinary person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

How hot is it in Irvington in September?

The high-temperature, in September, in Irvington, records 86.9°F (30.5°C), while the low-temperature is 73.9°F (23.3°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 98.6°F (37°C).

What is the average humidity in September in Irvington?

The average relative humidity in September is 74%.

How much does it rain in Irvington in September?

In Irvington, during September, the rain falls for 17.9 days and regularly aggregates up to 3.94" (100mm) of precipitation.

When it does not snow in Irvington?

February through December are months without snowfall.

How many hours of daylight does Irvington have in September?

In September, the average day length in Irvington, Alabama, is 12h and 20min.

When are sunrise and sunset in September in Irvington?

On the first day of September, sunrise is at 6:29 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:39 pm CDT.

How many hours of sunshine does Irvington have in September?

In September, the average sunshine duration in Irvington, Alabama, is 9.8h.

What is the UV index intensity in September in Irvington?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Irvington, AL

Average temperature in September - Irvington, AL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is January (59.2°F).

  • Average low temperature in September: 73.9°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).

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Average pressure in September
Irvington, AL

Average pressure in September - Irvington, AL
  • Average pressure in September: 29.98"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).

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Average wind speed in September
Irvington, AL

Average wind speed in September - Irvington, AL
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are January and April (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in September
Irvington, AL

Average humidity in September - Irvington, 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%).

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Average rainfall in September
Irvington, AL

Average rainfall in September - Irvington, AL
  • Average rainfall in September: 3.94"

The wettest month (with the highest rainfall) is August (6.1").
The driest month (with the least rainfall) is November (2.01").

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Average rainfall days in September
Irvington, AL

Average rainfall days in September - Irvington, AL
  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in September
Irvington, AL

Average snowfall in September - Irvington, AL
  • Average snowfall in September: 0"

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

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Average snowfall days in September
Irvington, AL

Average snowfall days in September - Irvington, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Irvington, AL

Average daylight in September / Average sunshine in September - Irvington, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
Irvington, AL

Average sunshine days in September - Irvington, AL
  • Average sunshine days in September: 10.5 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (5.1 days).

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Average UV index in September
Irvington, AL

Average UV index in September - Irvington, AL
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Irvington, AL

Average cloud cover in September - Irvington, AL
  • Average cloud cover in September: 25

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 23).

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Average visibility in September
Irvington, AL

Average visibility in September - Irvington, 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).

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Irvington, Alabama, USA

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