September weather forecast
Harrisburg, NC

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Weather in September

The first month of the autumn, September, is still a warm month in Harrisburg, North Carolina, with an average temperature varying between 82°F (27.8°C) and 63°F (17.2°C).

Temperature

September marks a gentle change in average high-temperature, declining from August's tropical 88.2°F (31.2°C) to a moderately hot 82°F (27.8°C). During the month of September, Harrisburg anticipates a mean low-temperature of 63°F (17.2°C).

Heat index

During September, the heat index is computed to be a tropical 87.8°F (31°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In September, the average relative humidity in Harrisburg, North Carolina, is 74%.

Rainfall

In Harrisburg, during September, the rain falls for 13.4 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 162.7 rainfall days, and 32.13" (816mm) of precipitation is accumulated.

Snowfall

In Harrisburg, snow does not fall in April through November.

Daylight

In September, the average length of the day in Harrisburg, North Carolina, is 12h and 23min.
On the first day of September in Harrisburg, sunrise is at 6:55 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:07 pm EDT.

Sunshine

In Harrisburg, North Carolina, the average sunshine in September is 8.8h.

UV index

In Harrisburg, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in September transforms into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What is the average September temperature in Harrisburg?

The high-temperature, in September, in Harrisburg, records 82°F (27.8°C), while the low-temperature is 63°F (17.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is computed to be 87.8°F (31°C).

What is the average humidity in September in Harrisburg?

The average relative humidity in September in Harrisburg is 74%.

How many days does it rain in September in Harrisburg?

In Harrisburg, in September, during 13.4 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow in Harrisburg?

April through November are months without snowfall in Harrisburg, North Carolina.

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

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

When is the sunrise / sunset in September in Harrisburg?

On the first day of September, sunrise is at 6:55 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:07 pm EDT.

How many hours of sunshine does Harrisburg have in September?

The average sunshine duration in September is 8.8h.

What is the UV index reading in September in Harrisburg?

In September, the average daily maximum UV index in Harrisburg, North Carolina, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Harrisburg, NC

Average temperature in September - Harrisburg, NC
  • Average high temperature in September: 82°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (48.2°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in September
Harrisburg, NC

Average pressure in September - Harrisburg, NC
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in September
Harrisburg, NC

Average wind speed in September - Harrisburg, NC
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in September
Harrisburg, NC

Average humidity in September - Harrisburg, NC
  • Average humidity in September: 74%

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are June and July (70%).

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Average rainfall in September
Harrisburg, NC

Average rainfall in September - Harrisburg, NC
  • Average rainfall in September: 2.2"

The wettest months (with the highest rainfall) are April and August (3.31").
The driest month (with the least rainfall) is October (2.05").

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Average rainfall days in September
Harrisburg, NC

Average rainfall days in September - Harrisburg, NC
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9.1 days).

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Average snowfall in September
Harrisburg, NC

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

The month with the highest snowfall is December (1.85").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Harrisburg, NC

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

The month with the highest number of snowfall days is February (2.3 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
Harrisburg, NC

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

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 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
Harrisburg, NC

Average sunshine days in September - Harrisburg, NC
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (9.8 days).

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Average UV index in September
Harrisburg, NC

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

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

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Average cloud cover in September
Harrisburg, NC

Average cloud cover in September - Harrisburg, NC
  • Average cloud cover in September: 34

The months with the most cloud cover are February and December (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Harrisburg, NC

Average visibility in September - Harrisburg, 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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Harrisburg, North Carolina, USA

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