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's onset records a minor alteration in the average high-temperature to a warm 85.6°F (29.8°C) from August's 90.3°F (32.4°C). Richmond Hill records an average low of 71.6°F (22°C) throughout the nights in September.Heat index
For September, the heat index is estimated at a torrid 96.8°F (36°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.For clarity, heat index numbers account for light winds and areas under shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Richmond Hill, during September, the rain falls for 12.1 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Richmond Hill, Georgia, during the entire year, the rain falls for 148.4 days and collects up to 27.13" (689mm) of precipitation.Snowfall
In Richmond Hill, Georgia, snow does not fall in January through November.Daylight
In September, the average length of the day in Richmond Hill is 12h and 21min.On the first day of September in Richmond Hill, sunrise is at 7:01 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:11 pm EDT.
Sunshine
In Richmond Hill, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Richmond Hill is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Richmond Hill in September?
What is the average humidity in September in Richmond Hill?
How much does it rain in Richmond Hill in September?
When it does not snow in Richmond Hill?
How many hours of daylight does Richmond Hill have in September?
When is the sunrise / sunset in September in Richmond Hill?
How many hours of sunshine does Richmond Hill have in September?
What is the UV index intensity in September in Richmond Hill?
Average temperature in September
Richmond Hill, GA
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in September: 71.6°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in September
Richmond Hill, 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
Richmond Hill, GA
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Richmond Hill, GA
- Average humidity in September: 76%
The months with the highest relative humidity are August and December (77%).
The months with the lowest relative humidity are January and March (72%).
Average rainfall in September
Richmond Hill, GA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is August (3.43").
The driest months (with the least rainfall) are January and November (1.42").
Average rainfall days in September
Richmond Hill, GA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is November (6.8 days).
Average snowfall in September
Richmond Hill, GA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Richmond Hill, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Richmond Hill, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Richmond Hill, GA
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is August (9.4 days).
Average UV index in September
Richmond Hill, 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
Richmond Hill, GA
- Average cloud cover in September: 29
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
Richmond Hill, 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).
Richmond Hill, Georgia, USA
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