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
The arrival of September coincides with an average high-temperature of a still hot 87.3°F (30.7°C), indicating a minimal shift from August's 90.9°F (32.7°C). Melville records a mean low-temperature of 69.1°F (20.6°C) in September.Heat index
September's mean heat index is estimated at a scorching 104°F (40°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
The average relative humidity in September is 79%.Rainfall
In Melville, in September, during 17.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Melville, during the entire year, the rain falls for 182 days and collects up to 39.09" (993mm) of precipitation.Snowfall
February through November are months without snowfall in Melville.Daylight
In Melville, Louisiana, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:29 pm. On the last day of September, in Melville, sunrise is at 7:00 am and sunset at 6:53 pm CDT.
Sunshine
In Melville, Louisiana, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index in Melville is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
Is it hot in Melville during September?
What is the average humidity in September in Melville?
How much does it rain in Melville in September?
When it does not snow in Melville?
What is the average length of the day in September in Melville?
When is the sunrise / sunset in September in Melville?
How long on average sun shines in September in Melville?
What is the UV index intensity in September in Melville?
Average temperature in September
Melville, LA
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (57.2°F).
- Average low temperature in September: 69.1°F
The month with the highest average low temperature is August (73.4°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).
Average pressure in September
Melville, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).
Average wind speed in September
Melville, LA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in September
Melville, LA
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Melville, LA
- Average rainfall in September: 2.91"
The wettest month (with the highest rainfall) is August (4.61").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in September
Melville, LA
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is August (22.5 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Melville, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Melville, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Melville, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Melville, LA
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is August (6.5 days).
Average UV index in September
Melville, 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
Melville, LA
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Melville, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, October, November and December (6mi).
The months with the lowest visibility are February, March, April, May, June, July, August and September (5mi).
Melville, Louisiana, USA
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