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
Irondale commences September with an average high-temperature of a warm 83.8°F (28.8°C), maintaining a close resemblance to the previous month. An average low-temperature of 65.7°F (18.7°C) marks the nights throughout September.Heat index
In September, the heat index is estimated at a tropical 91.4°F (33°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity in Irondale is 72%.Rainfall
In Irondale, in September, during 13.3 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, in Irondale, there are 181.2 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.Snowfall
In Irondale, Georgia, snow does not fall in April through October.Daylight
In Irondale, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:12 am and sunset at 8:02 pm. On the last day of September, in Irondale, sunrise is at 7:31 am and sunset at 7:22 pm EDT.
Sunshine
In Irondale, the average sunshine in September is 8.5h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Irondale during September?
What is the average humidity in September in Irondale?
How much does it rain in Irondale in September?
When it does not snow in Irondale?
What is the average length of the day in September in Irondale?
When are sunrise and sunset in September in Irondale?
How many hours of sunshine does Irondale have in September?
What are the months with the highest UV index in Irondale?
What is the UV index reading in September in Irondale?
Average temperature in September
Irondale, GA
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in September
Irondale, GA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Irondale, GA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Irondale, GA
- Average humidity in September: 72%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Irondale, GA
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is August (5.43").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in September
Irondale, GA
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in September
Irondale, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Irondale, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Irondale, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Irondale, GA
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in September
Irondale, GA
- Average UV index in September: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Irondale, GA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility in September
Irondale, GA
- 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).
Irondale, Georgia, USA
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