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
September heralds a minor drop in average high-temperature, sliding from August's tropical 89.6°F (32°C) to a moderately hot 84°F (28.9°C). Throughout September, Brookhaven's nights cool down to an average of 65.5°F (18.6°C).Heat index
September's heat index is appraised at a hot 91.4°F (33°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In September, the average relative humidity is 70%.Rainfall
In Brookhaven, in September, it is raining for 13.5 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, in Brookhaven, there are 187.2 rainfall days, and 44.13" (1121mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Brookhaven.Daylight
The average length of the day in September in Brookhaven is 12h and 22min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:22 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Brookhaven, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
How hot does it get in Brookhaven in September?
What is the average humidity in September in Brookhaven?
How much does it rain in Brookhaven in September?
When it does not snow in Brookhaven?
What is the average length of the day in September in Brookhaven?
What time are sunrise and sunset in September in Brookhaven?
How long on average sun shines in September in Brookhaven?
How high is the UV index in September in Brookhaven?
Average temperature in September
Brookhaven, GA
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Brookhaven, GA
- Average pressure in September: 30.03"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
Brookhaven, GA
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Brookhaven, GA
- Average humidity in September: 70%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (68%).
Average rainfall in September
Brookhaven, GA
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is August (5.63").
The driest month (with the least rainfall) is October (2.28").
Average rainfall days in September
Brookhaven, GA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is October (10.4 days).
Average snowfall in September
Brookhaven, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Brookhaven, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.4 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
Brookhaven, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Brookhaven, GA
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in September
Brookhaven, GA
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Brookhaven, GA
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Brookhaven, 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).
Brookhaven, Georgia, USA
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