Irondale
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Irondale, GA

The first month of the autumn, September, is still a warm month in Irondale, Georgia, with average temperature varying between 83.8°F (28.8°C) and 65.7°F (18.7°C).

Temperature

In Irondale, the average high-temperature is essentially the same as in August - a warm 83.8°F (28.8°C). The average low-temperature, in Irondale, is 65.7°F (18.7°C).

Heat index

The average heat index in September is calculated to a hot 90.9°F (32.7°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like clothing, wind, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in Irondale is 72%.

Rainfall

In Irondale, during September, the rain falls for 13.3 days and regularly aggregates up to 2.72" (69mm) of precipitation. Throughout the year, in Irondale, there are 181.2 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.

Snowfall

In Irondale snow does not fall in April through October.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

In Irondale, Georgia, the average sunshine in September is 8.5h.

UV index

May through September, with an average maximum UV index of 6, are months with the highest UV index in Irondale. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Irondale?

In September, in Irondale, Georgia, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 65.7°F (18.7°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, is estimated at 90.9°F (32.7°C).

What is the average humidity in September in Irondale?

In September, the average relative humidity in Irondale, Georgia, is 72%.

How many days does it rain in September in Irondale?

In Irondale, Georgia, during September, the rain falls for 13.3 days and regularly aggregates up to 2.72" (69mm) of precipitation.

When it does not snow in Irondale?

April through October are months without snowfall in Irondale, Georgia.

What is the average length of the day in September in Irondale?

In Irondale, the average length of the day in September is 12.4h.

How long on average sun shines in September in Irondale?

In Irondale, the average sunshine in September is 8.5h.

When is the highest UV index in Irondale?

Months with the highest UV index in Irondale, Georgia, are May through September, with an average maximum UV index of 6.

What is the UV index reading in September in Irondale?

In Irondale, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
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 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").
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).
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: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 8.5h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 5h).

Average UV index in September - Irondale, GA
  • Average UV index in September: 6

Months with the highest UV index are May, June, July, August and September (UV index 6).
Months with the lowest UV index are January, February and December (UV index 3).