September weather forecast
Thunderbolt, GA

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Weather in September

September, the first month of the autumn in Thunderbolt, is still a warm month, with an average temperature varying between 85.5°F (29.7°C) and 72.5°F (22.5°C).

Temperature

The shift into September uncovers an average high-temperature of a moderately hot 85.5°F (29.7°C), subtly different from the previous month. Thunderbolt observes an average low-temperature of 72.5°F (22.5°C) during September nights.

Heat index

In September, the heat index is appraised at a torrid 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In September, the average relative humidity in Thunderbolt is 75%.

Rainfall

In Thunderbolt, during September, the rain falls for 13.5 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Thunderbolt, Georgia, during the entire year, the rain falls for 155.6 days and collects up to 29.41" (747mm) of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

In September, the average length of the day in Thunderbolt is 12h and 21min.
On the first day of September, sunrise is at 6:59 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:09 pm EDT.

Sunshine

In Thunderbolt, the average sunshine in September 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 risk from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

How hot is it in Thunderbolt in September?

Thunderbolt in September has an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 72.5°F (22.5°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in September is appraised at 95°F (35°C).

What is the average humidity in September in Thunderbolt?

The average relative humidity in September in Thunderbolt, Georgia, is 75%.

How much does it rain in Thunderbolt in September?

In Thunderbolt, during September, the rain falls for 13.5 days and regularly aggregates up to 2.36" (60mm) of precipitation.

When it does not snow in Thunderbolt?

February through November are months without snowfall.

What is the average length of the day in September in Thunderbolt?

The average day length in September in Thunderbolt is 12h and 21min.

When is the sunrise / sunset in September in Thunderbolt?

In September, on the first day of the month, sunrise is at 6:59 am and sunset at 7:47 pm. On the last day of the month, in Thunderbolt, sunrise is at 7:17 am and sunset at 7:09 pm EDT.

How many hours of sunshine does Thunderbolt have in September?

The average sunshine duration in September in Thunderbolt, Georgia, is 8.5h.

What is the UV index intensity in September in Thunderbolt?

The average daily maximum UV index in September in Thunderbolt, Georgia, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Thunderbolt, GA

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).

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Average pressure in September
Thunderbolt, GA

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).

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Average wind speed in September
Thunderbolt, GA

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).

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Average humidity in September
Thunderbolt, GA

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%).

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Average rainfall in September
Thunderbolt, GA

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").

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Average rainfall days in September
Thunderbolt, GA

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).

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Average snowfall in September
Thunderbolt, GA

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").

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Average snowfall days in September
Thunderbolt, GA

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).

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Average daylight in September /
Average sunshine in September
Thunderbolt, GA

Average daylight in September / Average sunshine in September - Thunderbolt, 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: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in September
Thunderbolt, GA

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).

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Average UV index in September
Thunderbolt, GA

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).

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Average cloud cover in September
Thunderbolt, GA

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).

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Average visibility in September
Thunderbolt, GA

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).

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Thunderbolt, Georgia, USA

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