September weather forecastCarrboro, NC
September
Weather in September
September, the first month of the autumn in Carrboro, is still a warm month, with an average temperature ranging between min 63.3°F (17.4°C) and max 82°F (27.8°C).Temperature
Carrboro's transition into September involves a gentle shift in temperature, receding from a tropical 88°F (31.1°C) in August to a warm 82°F (27.8°C). Carrboro anticipates an average minimum temperature of 63.3°F (17.4°C) in the month of September.Heat index
The heat index value for September is calculated to be a hot 87.8°F (31°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Carrboro, in September, during 11.4 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 130 rainfall days, and 14.21" (361mm) of precipitation is accumulated.Snowfall
In Carrboro, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:11 am and sunset at 7:01 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Carrboro, NC
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (47.7°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in September
Carrboro, NC
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Carrboro, NC
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Carrboro, NC
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Carrboro, NC
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is October (0.83").
Average rainfall days in September
Carrboro, NC
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is November (6.4 days).
Average snowfall in September
Carrboro, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Carrboro, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Carrboro, NC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Carrboro, NC
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is October (22.3 days).
The months with the least sunshine days are July and August (12.8 days).
Average UV index in September
Carrboro, NC
- 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
Carrboro, NC
- Average cloud cover in September: 37
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Carrboro, 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).
