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
The dawn of September sees an average high-temperature of a moderately hot 85.1°F (29.5°C), subtly contrasting with August's 90°F (32.2°C). In Altamaha, in September, the average low-temperature is an agreeable 68.9°F (20.5°C).Heat index
The heat index value during September is evaluated at a very hot 95°F (35°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The average relative humidity in September is 76%.Rainfall
In September, in Altamaha, the rain falls for 16.7 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 176.6 rainfall days, and 34.25" (870mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall in Altamaha.Daylight
The average length of the day in September in Altamaha, Georgia, is 12h and 21min.On the first day of September, sunrise is at 7:04 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine in Altamaha is 8.5h.UV index
In Altamaha, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 6 in September leads to these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
How hot does it get in Altamaha in September?
What is the average humidity in September in Altamaha?
How many days does it rain in September in Altamaha?
When it does not snow in Altamaha?
What is the average length of the day in September in Altamaha?
What time are sunrise and sunset in September in Altamaha?
How many hours of sunshine does Altamaha have in September?
How high is the UV index in September in Altamaha?
Average temperature in September
Altamaha, GA
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (57.4°F).
- Average low temperature in September: 68.9°F
The months with the highest average low temperature are July and August (73.4°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).
Average pressure in September
Altamaha, GA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Altamaha, GA
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Altamaha, GA
- Average humidity in September: 76%
The month with the highest relative humidity is August (77%).
The months with the lowest relative humidity are January and November (71%).
Average rainfall in September
Altamaha, GA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Altamaha, GA
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is November (7.6 days).
Average snowfall in September
Altamaha, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Altamaha, GA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.2 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
Altamaha, GA
- 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Altamaha, GA
- Average sunshine days in September: 10.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is August (5.4 days).
Average UV index in September
Altamaha, GA
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Altamaha, GA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Altamaha, 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).
Altamaha, Georgia, USA
Weather forecast for your location
2. Allow the app to use your location
