September weather forecast
Altamahaw, NC

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Weather in September

September, the first month of the autumn in Altamahaw, is still a warm month, with an average temperature ranging between max 81.1°F (27.3°C) and min 62.2°F (16.8°C).

Temperature

The onset of September is marked by a minor decrease in temperature, transitioning from a hot 87.3°F (30.7°C) in August to a warm 81.1°F (27.3°C). The low-temperature averages to a refreshing 62.2°F (16.8°C) during the nights of September.

Heat index

In September, the average heat index is estimated at a hot 86°F (30°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. 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 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In Altamahaw, North Carolina, in September, during 13.7 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, in Altamahaw, North Carolina, there are 160.6 rainfall days, and 31.85" (809mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Altamahaw.

Daylight

The average length of the day in September is 12h and 24min.
On the first day of September in Altamahaw, sunrise is at 6:50 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:02 pm EDT.

Sunshine

In September, the average sunshine in Altamahaw, North Carolina, is 8.6h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a regular UV index of 5 translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What are the temperatures in Altamahaw in September?

In September, in Altamahaw, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 62.2°F (16.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 86°F (30°C).

What is the average humidity in September in Altamahaw?

In Altamahaw, the average relative humidity in September is 76%.

How many days does it rain in September in Altamahaw?

In September, the rain falls for 13.7 days. Throughout September, 2.36" (60mm) of precipitation is accumulated.

When it does not snow in Altamahaw?

In Altamahaw, North Carolina, snow does not fall in April through October.

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

The average day length in September in Altamahaw, North Carolina, is 12h and 24min.

When is the sunrise / sunset in September in Altamahaw?

In September, on the first day of the month, sunrise is at 6:50 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:02 pm EDT.

How many hours of sunshine does Altamahaw have in September?

The average sunshine duration in September in Altamahaw is 8.6h.

What is the UV index reading in September in Altamahaw?

In Altamahaw, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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
Altamahaw, NC

Average temperature in September - Altamahaw, NC
  • Average high temperature in September: 81.1°F

The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

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Average pressure in September
Altamahaw, NC

Average pressure in September - Altamahaw, 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 (29.97"Hg).

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Average wind speed in September
Altamahaw, NC

Average wind speed in September - Altamahaw, NC
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in September
Altamahaw, NC

Average humidity in September - Altamahaw, NC
  • Average humidity in September: 76%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in September
Altamahaw, NC

Average rainfall in September - Altamahaw, NC
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is October (1.89").

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Average rainfall days in September
Altamahaw, NC

Average rainfall days in September - Altamahaw, NC
  • Average rainfall days in September: 13.7 days

The months with the highest number of rainy days are May and August (17.3 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in September
Altamahaw, NC

Average snowfall in September - Altamahaw, NC
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.28").
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
Altamahaw, NC

Average snowfall days in September - Altamahaw, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.6 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
Altamahaw, NC

Average daylight in September / Average sunshine in September - Altamahaw, 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 42min).

  • Average sunshine in September: 8h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in September
Altamahaw, NC

Average sunshine days in September - Altamahaw, NC
  • Average sunshine days in September: 15 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in September
Altamahaw, NC

Average UV index in September - Altamahaw, NC
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in September
Altamahaw, NC

Average cloud cover in September - Altamahaw, NC
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 32).

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Average visibility in September
Altamahaw, NC

Average visibility in September - Altamahaw, NC
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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Altamahaw, North Carolina, USA

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