September weather forecastHarlem, GA
September
Weather in September
September, the first month of the autumn in Harlem, is still a warm month, with an average temperature varying between 67.1°F (19.5°C) and 85.6°F (29.8°C).Temperature
September's average high-temperature stands at a moderately hot 85.6°F (29.8°C), showing little deviation from August's 90.5°F (32.5°C). In Harlem, an average low-temperature of 67.1°F (19.5°C) is recorded during September nights.Heat index
The heat index in September is estimated at a very hot 95°F (35°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Understand that the heat index values take into account shaded locations and mild winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. 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. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In Harlem, the average relative humidity in September is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 1.93" (49mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Harlem is 12h and 22min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:14 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Harlem, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 during September translates into the following guidance:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harlem, GA
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (53.6°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).
Average pressure in September
Harlem, GA
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Harlem, GA
- Average wind speed in September: 5.8mph
The windiest months (with the highest average wind speed) are January, February, March and April (8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Harlem, GA
- Average humidity in September: 71%
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are July and November (70%).
Average rainfall in September
Harlem, GA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Harlem, GA
- Average rainfall days in September: 13.5 days
The months with the highest number of rainy days are July and August (19.5 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Harlem, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Harlem, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Harlem, GA
- Average daylight in September: 12h and 24min
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 36min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Harlem, GA
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in September
Harlem, GA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Harlem, GA
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Harlem, 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).
