September weather forecast
Carrboro, NC

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Weather in September

The first month of the autumn, September, is still a warm month in Carrboro, North Carolina, with an average temperature fluctuating between 63.3°F (17.4°C) and 82°F (27.8°C).

Temperature

Carrboro, North Carolina, in September undergoes a slight reduction in the average high-temperature, shifting from August's hot 88°F (31.1°C) to a moderately hot 82°F (27.8°C). Carrboro experiences a consistent average temperature of 63.3°F (17.4°C) throughout the nights in September.

Heat index

In September, the heat index is evaluated at a tropical 87.8°F (31°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Carrboro, during September, the rain falls for 11.4 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Carrboro, North Carolina, during the entire year, the rain falls for 130 days and collects up to 14.21" (361mm) of precipitation.

Snowfall

In Carrboro, snow does not fall in April through October.

Daylight

The average length of the day in September in Carrboro is 12h and 23min.
On the first day of September in Carrboro, North Carolina, sunrise is at 6:48 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:01 pm EDT.

Sunshine

The average sunshine in September in Carrboro, North Carolina, is 8.9h.

UV index

In Carrboro, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Exercise prevention - Warding off sunburn is urged. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What is the temperature in September in Carrboro?

In Carrboro, 82°F (27.8°C) is the average high-temperature and 63.3°F (17.4°C) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 87.8°F (31°C).

What is the average humidity in September in Carrboro?

In Carrboro, North Carolina, the average relative humidity in September is 75%.

How much does it rain in Carrboro in September?

In September, in Carrboro, the rain falls for 11.4 days. Throughout September, 0.98" (25mm) of precipitation is accumulated.

When it does not snow in Carrboro?

April through October are months without snowfall in Carrboro.

What is the average length of the day in September in Carrboro?

In September, the average day length is 12h and 23min.

What time are sunrise and sunset in September in Carrboro?

On the first day of September in Carrboro, North Carolina, sunrise is at 6:48 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:01 pm EDT.

How many hours of sunshine does Carrboro have in September?

In Carrboro, North Carolina, the average sunshine duration in September is 8.9h.

How high is the UV index in September in Carrboro?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Carrboro, NC

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).

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Average pressure in September
Carrboro, NC

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).

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Average wind speed in September
Carrboro, NC

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).

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Average humidity in September
Carrboro, NC

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%).

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Average rainfall in September
Carrboro, NC

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").

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Average rainfall days in September
Carrboro, NC

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).

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Average snowfall in September
Carrboro, NC

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").

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Average snowfall days in September
Carrboro, NC

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).

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Average daylight in September /
Average sunshine in September
Carrboro, NC

Average daylight in September / Average sunshine in September - Carrboro, NC
  • Average daylight in September: 12h and 2min

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 5min

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).

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Average sunshine days in September
Carrboro, NC

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).

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Average UV index in September
Carrboro, NC

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).

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Average cloud cover in September
Carrboro, NC

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).

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Average visibility in September
Carrboro, NC

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).

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Carrboro, North Carolina, USA

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