September weather forecastMandeville, GA
September
Weather in September
September, the first month of the autumn in Mandeville, is also a moderately hot month, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 83.3°F (28.5°C).Temperature
Mandeville registers an average high-temperature of a warm 83.3°F (28.5°C) at the commencement of September, closely related to the preceding month. During September, the nighttime temperature in Mandeville averages of 64°F (17.8°C).Heat index
The average heat index in September is computed to be a hot 89.6°F (32°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Mandeville, in September, during 13.7 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Mandeville, Georgia, during the entire year, the rain falls for 180.2 days and collects up to 41.5" (1054mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Mandeville is 12h and 22min.On the first day of September in Mandeville, sunrise is at 7:14 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:25 pm EDT.
Sunshine
The average sunshine in September in Mandeville is 8.5h.UV index
In Mandeville, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Take necessary precautions - Defending against sun damage is advocated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mandeville, GA
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in September
Mandeville, GA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Mandeville, GA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Mandeville, GA
- Average humidity in September: 75%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Mandeville, GA
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is August (4.76").
The driest month (with the least rainfall) is October (1.97").
Average rainfall days in September
Mandeville, GA
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is October (8.6 days).
Average snowfall in September
Mandeville, GA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mandeville, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Mandeville, GA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Mandeville, GA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in September
Mandeville, GA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Mandeville, GA
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are June and October (Cloud cover 32).
Average visibility in September
Mandeville, GA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
