September weather forecastMarthaville, LA
September
Weather in September
September, the first month of the autumn in Marthaville, is still a hot month, with an average temperature fluctuating between 88.7°F (31.5°C) and 68°F (20°C).Temperature
September is marked by a subtle drop in average high-temperatures, transitioning from a tropical 94.6°F (34.8°C) in August to a still hot 88.7°F (31.5°C). In Marthaville, September nights cool down to an average of 68°F (20°C).Heat index
Throughout September, the heat index is appraised at an extremely hot 104°F (40°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Evaluating the heat index requires understanding its values in the shade and with gentle winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
In Marthaville, the average relative humidity in September is 73%.Rainfall
In Marthaville, during September, the rain falls for 14.7 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 154.2 rainfall days, and 33.46" (850mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In Marthaville, the average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:59 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In Marthaville, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marthaville, LA
- Average high temperature in September: 88.7°F
The warmest months (with the highest average high temperature) are July and August (94.6°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
Marthaville, 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 (29.93"Hg).
Average wind speed in September
Marthaville, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Marthaville, LA
- Average humidity in September: 73%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in September
Marthaville, LA
- Average rainfall in September: 2.91"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in September
Marthaville, LA
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is August (16.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Marthaville, LA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Marthaville, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 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
Marthaville, LA
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Marthaville, LA
- Average sunshine days in September: 13 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is August (11.9 days).
Average UV index in September
Marthaville, 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 and December (UV index 3).
Average cloud cover in September
Marthaville, LA
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in September
Marthaville, LA
- Average visibility in September: 5mi
The months with the highest visibility are June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, September and December (5mi).
