September weather forecastThunderbolt, GA
September
Weather in September
September, the first month of the autumn in Thunderbolt, is still a warm month, with temperature in the range of an average high of 85.5°F (29.7°C) and an average low of 72.5°F (22.5°C).Temperature
The average high-temperature during September registers at a moderately hot 85.5°F (29.7°C), closely corresponding to the preceding month. Thunderbolt reports an average low-temperature of 72.5°F (22.5°C) during the nights of September.Heat index
The average heat index in September is estimated at a fiery hot 95°F (35°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Note that heat index values are valued for light wind and location in the shade. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
The average relative humidity in September is 75%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 155.6 rainfall days, and 29.41" (747mm) of precipitation is accumulated.Snowfall
In Thunderbolt, snow does not fall in February through November.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:59 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:09 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during September leads to these advisories:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Thunderbolt, GA
- Average high temperature in September: 85.5°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 (58.1°F).
- Average low temperature in September: 72.5°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (43.7°F).
Average pressure in September
Thunderbolt, GA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Thunderbolt, GA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Thunderbolt, GA
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Thunderbolt, GA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in September
Thunderbolt, GA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in September
Thunderbolt, GA
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Thunderbolt, GA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Thunderbolt, GA
- Average daylight in September: 12h and 24min
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 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Thunderbolt, GA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in September
Thunderbolt, GA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Thunderbolt, GA
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Thunderbolt, 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).
