Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As September arrives, Henderson's weather displays a minor decrease in high-temperatures, transitioning from August's tropical 87.4°F (30.8°C) to a moderately hot 81.7°F (27.6°C). During September, the temperature is averaged to a low of 63.1°F (17.3°C) at night.Heat index
The average heat index in September is computed to be a tropical 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In Henderson, the average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall in Henderson. Rain falls for 13.2 days and accumulates 2.09" (53mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Henderson is 12h and 24min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:41 pm. On the last day of September, in Henderson, North Carolina, sunrise is at 7:08 am and sunset at 6:58 pm EDT.
Sunshine
In Henderson, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What are September temperatures in Henderson?
What is the average humidity in September in Henderson?
What is the driest month in Henderson?
How many days does it rain in September in Henderson?
When it does not snow in Henderson?
What is the average length of the day in September in Henderson?
When are sunrise and sunset in September in Henderson?
How long on average sun shines in September in Henderson?
What is the UV index intensity in September in Henderson?
Average temperature in September
Henderson, NC
- Average high temperature in September: 81.7°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: 63.1°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 (31.1°F).
Average pressure in September
Henderson, 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
Henderson, NC
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Henderson, NC
- Average humidity in September: 76%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (72%).
Average rainfall in September
Henderson, NC
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Henderson, NC
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in September
Henderson, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Henderson, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Henderson, 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 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Henderson, NC
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (20.1 days).
The months with the least sunshine days are May and July (12.1 days).
Average UV index in September
Henderson, NC
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Henderson, NC
- Average cloud cover in September: 38
The months with the most cloud cover are February and March (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in September
Henderson, 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).
Henderson, North Carolina, USA
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