September weather forecast
Gainestown, AL

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Weather in September

September, the first month of the autumn in Gainestown, is also a hot month, with an average temperature fluctuating between 88.5°F (31.4°C) and 68°F (20°C).

Temperature

The transition from August to September brings an average high-temperature of a still tropical 88.5°F (31.4°C), barely different from August's 92.1°F (33.4°C). An average nighttime temperature of 68°F (20°C) is witnessed throughout September.

Heat index

September's mean heat index is calculated to be a blisteringly hot 104°F (40°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Gainestown, Alabama, in September, during 16.5 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 173.9 rainfall days, and 35.63" (905mm) of precipitation is accumulated.

Snowfall

In Gainestown, snow does not fall in April 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 6:27 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:36 pm CDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in September translates into these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

In September, in Gainestown, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 68°F (20°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in September is calculated to be 104°F (40°C).

What is the average humidity in September?

In Gainestown, Alabama, the average relative humidity in September is 75%.

How many days does it rain in September?

In Gainestown, during September, the rain falls for 16.5 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow?

In Gainestown, Alabama, snow does not fall in April through November.

How many hours of daylight does Gainestown have in September?

The average day length in September is 12h and 21min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:27 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:36 pm CDT.

How long on average sun shines in September in Gainestown?

In September, the average sunshine duration is 8.8h.

What is the UV index reading in September?

In Gainestown, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to 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
Gainestown, AL

Average temperature in September - Gainestown, 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).

Average pressure in September
Gainestown, AL

Average pressure in September - Gainestown, AL
  • Average pressure in September: 29.98"Hg

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

Average wind speed in September
Gainestown, AL

Average wind speed in September - Gainestown, 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).

Average humidity in September
Gainestown, AL

Average humidity in September - Gainestown, 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%).

Average rainfall in September
Gainestown, AL

Average rainfall in September - Gainestown, 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").

Average rainfall days in September
Gainestown, AL

Average rainfall days in September - Gainestown, 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).

Average snowfall in September
Gainestown, AL

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

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

Average snowfall days in September
Gainestown, AL

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

The month with the highest number of snowfall days is January (0.5 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
Gainestown, AL

Average daylight in September / Average sunshine in September - Gainestown, 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 30min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Gainestown, AL

Average sunshine days in September - Gainestown, 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).

Average UV index in September
Gainestown, AL

Average UV index in September - Gainestown, 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
Gainestown, AL

Average cloud cover in September - Gainestown, 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).

Average visibility in September
Gainestown, AL

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

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

Gainestown, Alabama, USA

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