September weather forecastSeven Lakes, NC

September

Weather in September

September, the first month of the autumn in Seven Lakes, is also a moderately hot month, with an average temperature fluctuating between 82.9°F (28.3°C) and 64°F (17.8°C).

Temperature

The onset of September entails a subtle temperature shift, as the average high-temperature eases from a hot 88.3°F (31.3°C) in August to a moderately hot 82.9°F (28.3°C). In Seven Lakes, September nights cool down to an average of 64°F (17.8°C).

Heat index

In September, the average heat index is appraised at a tropical 89.6°F (32°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Consider that heat index readings are for situations in the shade and light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for 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.

Humidity

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

Rainfall

In Seven Lakes, during September, the rain falls for 13.5 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Seven Lakes, North Carolina, during the entire year, the rain falls for 159.1 days and collects up to 30.47" (774mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:51 am and sunset at 7:44 pm. On the last day of September, in Seven Lakes, sunrise is at 7:12 am and sunset at 7:03 pm EDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

In Seven Lakes, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Seven Lakes, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in September is appraised at 89.6°F (32°C).

In Seven Lakes, the average relative humidity in September is 75%.

In September, the rain falls for 13.5 days. Throughout September, 2.68" (68mm) of precipitation is accumulated.

April through October are months without snowfall.

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

In September, on the first day of the month, sunrise is at 6:51 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:03 pm EDT.

The average sunshine duration in September is 9.1h.

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Seven Lakes, 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 (49.3°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in September
Seven Lakes, 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 (29.97"Hg).

Average wind speed in September
Seven Lakes, NC

  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Seven Lakes, NC

  • Average humidity in September: 75%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (71%).

Average rainfall in September
Seven Lakes, NC

  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is October (1.89").

Average rainfall days in September
Seven Lakes, NC

  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Seven Lakes, NC

  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Seven Lakes, 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
Seven Lakes, 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: 9h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

Average sunshine days in September
Seven Lakes, NC

  • Average sunshine days in September: 15 days

The month with the most sunshine days is October (20.1 days).
The months with the least sunshine days are July and August (11.4 days).

Average UV index in September
Seven Lakes, NC

  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in September
Seven Lakes, NC

  • Average cloud cover in September: 34

The months with the most cloud cover are February, March and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September
Seven Lakes, 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).