September weather forecastCharlotte, NC
September
Weather in September
With the arrival of September, the fall season starts to settle in Charlotte. The average high temperature drops to a more comfortable 82.9°F (28.3°C) and the low temperature averages at around 63.7°F (17.6°C). Compared to August, the fall season brings a noticeable shift in the weather and daylight hours. Looking ahead to October, temperatures continue their gradual decline, paving the way for the more pronounced autumn weather. It transforms the city into a beautiful spectacle with trees adorned in hues of red, orange, and yellow.Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's tropical 88.7°F (31.5°C) to a warm 82.9°F (28.3°C). September's average low-temperature reading in Charlotte settles at a refreshing 63.7°F (17.6°C).Heat index
In September, the heat index is computed to be a tropical 89.6°F (32°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. 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.
Humidity
In September, the average relative humidity is 72%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 145.8 rainfall days, and 20.47" (520mm) of precipitation is accumulated.Snowfall
In Charlotte, snow does not fall in April through November.Daylight
The average length of the day in September in Charlotte is 12h and 23min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:08 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Charlotte, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Charlotte, NC
- Average high temperature in September: 82.9°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 (48.7°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in September
Charlotte, NC
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Charlotte, NC
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Charlotte, NC
- Average humidity in September: 72%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Charlotte, NC
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is August (2.6").
The driest month (with the least rainfall) is October (1.3").
Average rainfall days in September
Charlotte, NC
- Average rainfall days in September: 11.8 days
The months with the highest number of rainy days are July and August (16.9 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in September
Charlotte, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Charlotte, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Charlotte, NC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 48min
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
Charlotte, NC
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
Charlotte, NC
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Charlotte, NC
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Charlotte, NC
- 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).
