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 advent of September in McDonough signifies a minor shift to an average high-temperature of a moderately hot 84.6°F (29.2°C), aligning closely with August. McDonough records a mean low-temperature of 65.3°F (18.5°C) in September.Heat index
September's average heat index is appraised at a hot 93.2°F (34°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant 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's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In McDonough, the average relative humidity in September is 73%.Rainfall
In McDonough, in September, during 13.6 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 179.5 rainfall days, and 40.08" (1018mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September in McDonough, sunrise is at 7:11 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September in McDonough?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does McDonough have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
McDonough, GA
- Average high temperature in September: 84.6°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 (51.6°F).
- Average low temperature in September: 65.3°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 (35.4°F).
Average pressure in September
McDonough, 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
McDonough, GA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
McDonough, GA
- Average humidity in September: 73%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are October and November (72%).
Average rainfall in September
McDonough, GA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is August (5.24").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in September
McDonough, GA
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
McDonough, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
McDonough, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 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
McDonough, 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 6min).
Average sunshine days in September
McDonough, GA
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (7.1 days).
Average UV index in September
McDonough, GA
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
McDonough, GA
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 45).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility in September
McDonough, 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).
McDonough, Georgia, USA
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