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, Haynesville's weather displays a minor decrease in high-temperatures, transitioning from August's tropical 93.7°F (34.3°C) to a still hot 87.8°F (31°C). Haynesville usually reports an average low-temperature of 66.7°F (19.3°C) during the month of September.Heat index
September's heat index is estimated at a sweltering 100.4°F (38°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Heat index determinations are made taking into account the shade and light air movements. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. 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.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In Haynesville, the average relative humidity in September is 71%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 2.01" (51mm) of precipitation.Snowfall
In Haynesville, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:37 pm. On the last day of September, in Haynesville, Louisiana, sunrise is at 7:06 am and sunset at 6:58 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
How hot is September in Haynesville?
What is the average humidity in September in Haynesville?
What is the driest month in Haynesville?
How much does it rain in Haynesville in September?
When it does not snow in Haynesville?
What is the average length of the day in September in Haynesville?
What time are sunrise and sunset in September in Haynesville?
How long on average sun shines in September in Haynesville?
What is the UV index reading in September in Haynesville?
Average temperature in September
Haynesville, LA
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is July (94.1°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 66.7°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.6°F).
Average pressure in September
Haynesville, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Haynesville, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Haynesville, LA
- Average humidity in September: 71%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Haynesville, LA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Haynesville, LA
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (15 days).
The months with the least rainy days are October and November (10.4 days).
Average snowfall in September
Haynesville, LA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Haynesville, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Haynesville, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Haynesville, LA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is February (13.8 days).
Average UV index in September
Haynesville, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Haynesville, LA
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in September
Haynesville, LA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Haynesville, Louisiana, USA
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