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
Portal's September reports an average high-temperature of a warm 84.7°F (29.3°C), exhibiting a minor difference from August. September nights experience a consistent temperature drop to an agreeable 68.2°F (20.1°C).Heat index
In September, the average heat index is computed to be a very hot 95°F (35°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. 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 77%.Rainfall
In Portal, during September, the rain falls for 13.1 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Portal, during the entire year, the rain falls for 140.8 days and collects up to 17.09" (434mm) of precipitation.Snowfall
In Portal, Georgia, snow does not fall in March through December.Daylight
In Portal, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index in Portal is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 6 in September transforms into this advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Portal during September?
What is the average humidity in September in Portal?
How much does it rain in Portal in September?
When it does not snow in Portal?
How many hours of daylight does Portal have in September?
What time are sunrise and sunset in September in Portal?
How long on average sun shines in September in Portal?
How high is the UV index in September in Portal?
Average temperature in September
Portal, GA
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (56.1°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in September
Portal, GA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Portal, GA
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Portal, GA
- Average humidity in September: 77%
The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is January (71%).
Average rainfall in September
Portal, GA
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in September
Portal, GA
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (5.8 days).
Average snowfall in September
Portal, GA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Portal, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 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
Portal, 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 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Portal, GA
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in September
Portal, GA
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Portal, GA
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Portal, GA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Portal, Georgia, USA
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