Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Welcoming September, Gardendale notes an average high-temperature of a warm 84.9°F (29.4°C), nearly consistent with August's 90°F (32.2°C). During September, the average low-temperature is recorded at an enjoyable 65.3°F (18.5°C).Heat index
The heat index in September is calculated to be a hot 93.2°F (34°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
The average relative humidity in September is 72%.Rainfall
In September, the rain falls for 14.2 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 173.8 rainfall days, and 39.41" (1001mm) of precipitation is accumulated.Snowfall
In Gardendale, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:32 pm CDT.
Sunshine
In Gardendale, the average sunshine in September is 8.9h.UV index
In Gardendale, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Gardendale have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Gardendale, AL
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in September
Gardendale, AL
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Gardendale, AL
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity in September
Gardendale, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Gardendale, AL
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is December (4.09").
The driest month (with the least rainfall) is October (2.09").
Average rainfall days in September
Gardendale, AL
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in September
Gardendale, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Gardendale, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Gardendale, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Gardendale, AL
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in September
Gardendale, AL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Gardendale, AL
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in September
Gardendale, 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).
Gardendale, Alabama, USA
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