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 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
The average high-temperature during September registers at a still hot 86.9°F (30.5°C), maintaining a close resemblance to the previous month. Henderson's average low-temperature in the month of September is recorded at a pleasant 70°F (21.1°C).Heat index
September's average heat index is calculated to be a very hot 102.2°F (39°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
In Henderson, the average relative humidity in September is 80%.Rainfall
In Henderson, in September, during 13.7 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Henderson, during the entire year, the rain falls for 135.8 days and collects up to 16.1" (409mm) of precipitation.Snowfall
In Henderson, snow does not fall in February through November.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September, sunrise is at 6:44 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September in Henderson is 9.7h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 6 in September translates into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
How hot is September in Henderson?
What is the average humidity in September in Henderson?
How much does it rain in Henderson in September?
When it does not snow in Henderson?
What is the average length of the day in September in Henderson?
When is the sunrise / sunset in September in Henderson?
How many hours of sunshine does Henderson have in September?
What is the UV index reading in September in Henderson?
Average temperature in September
Henderson, LA
- Average high temperature in September: 86.9°F
The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in September: 70°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (43.7°F).
Average pressure in September
Henderson, LA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Henderson, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (7.7mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).
Average humidity in September
Henderson, LA
- Average humidity in September: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Henderson, LA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is August (2.44").
The driest months (with the least rainfall) are March and November (0.87").
Average rainfall days in September
Henderson, LA
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is November (8.1 days).
Average snowfall days in September
Henderson, LA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Henderson, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Henderson, LA
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in September
Henderson, LA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Henderson, LA
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility in September
Henderson, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, May, June, October, November and December (6mi).
The months with the lowest visibility are April, July, August and September (5mi).
Henderson, Louisiana, USA
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