September weather forecast
Herbert, AL

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Weather in September

September, the first month of the autumn in Herbert, is also a hot month, with an average temperature ranging between max 87.1°F (30.6°C) and min 67.8°F (19.9°C).

Temperature

The onset of September manifests an average high-temperature of a still tropical 87.1°F (30.6°C), demonstrating a minor variation from the preceding month. Throughout the month of September, Herbert sees a steady low-temperature average of 67.8°F (19.9°C).

Heat index

The heat index value for September is calculated to be a very hot 100.4°F (38°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Herbert, in September, during 15.4 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 171.8 rainfall days, and 35.16" (893mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of September, sunrise is at 6:23 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:33 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

Is it hot during September?

The high-temperature, in September, in Herbert, records 87.1°F (30.6°C), while the low-temperature is 67.8°F (19.9°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 100.4°F (38°C).

What is the average humidity in September?

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

How many days does it rain in September?

In Herbert, during September, the rain falls for 15.4 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow?

In Herbert, snow does not fall in April through November.

How many hours of daylight does Herbert have in September?

In Herbert, the average day length in September is 12h and 21min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:23 am and sunset at 7:10 pm. On the last day of the month, in Herbert, sunrise is at 6:40 am and sunset at 6:33 pm CDT.

How many hours of sunshine does Herbert have in September?

In Herbert, the average sunshine duration in September is 8.9h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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
Herbert, AL

Average temperature in September - Herbert, AL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (56.7°F).

  • Average low temperature in September: 67.8°F

The month with the highest average low temperature is August (72.1°F).
The coldest month (with the lowest average low temperature) is January (39°F).

Average pressure in September
Herbert, AL

Average pressure in September - Herbert, 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
Herbert, AL

Average wind speed in September - Herbert, AL
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in September
Herbert, AL

Average humidity in September - Herbert, AL
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Herbert, AL

Average rainfall in September - Herbert, AL
  • Average rainfall in September: 2.28"

The wettest months (with the highest rainfall) are August and December (3.94").
The driest month (with the least rainfall) is November (1.93").

Average rainfall days in September
Herbert, AL

Average rainfall days in September - Herbert, AL
  • Average rainfall days in September: 15.4 days

The month with the highest number of rainy days is July (23 days).
The month with the least rainy days is November (7.3 days).

Average snowfall in September
Herbert, AL

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

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

Average snowfall days in September
Herbert, AL

Average snowfall days in September - Herbert, 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 and October (0 days).

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

Average daylight in September / Average sunshine in September - Herbert, 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 months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Herbert, AL

Average sunshine days in September - Herbert, AL
  • Average sunshine days in September: 12.9 days

The months with the most sunshine days are October and November (21 days).
The month with the least sunshine days is July (6.5 days).

Average UV index in September
Herbert, AL

Average UV index in September - Herbert, 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
Herbert, AL

Average cloud cover in September - Herbert, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 29).

Average visibility in September
Herbert, AL

Average visibility in September - Herbert, AL
  • Average visibility in September: 5mi

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

Herbert, Alabama, USA

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