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
Natchez's progression into September involves a gentle drop in the average high-temperature, from 94.3°F (34.6°C) in August to a still tropical 88.9°F (31.6°C). In the month of September, the average low-temperature usually rests at a pleasant 68°F (20°C).Heat index
For September, the heat index is calculated to be an extremely hot 104°F (40°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.One should consider that heat index numbers are for shaded settings and light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Natchez, Louisiana, during September, the rain falls for 13.1 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 142.7 rainfall days, and 23.9" (607mm) of precipitation is accumulated.Snowfall
In Natchez, snow does not fall in April through November.Daylight
In Natchez, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:48 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Natchez have in September?
How high is the UV index in September?
Average temperature in September
Natchez, LA
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (55.8°F).
- Average low temperature in September: 68°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in September
Natchez, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Natchez, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).
Average humidity in September
Natchez, LA
- Average humidity in September: 73%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in September
Natchez, LA
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is November (1.3").
Average rainfall days in September
Natchez, LA
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Natchez, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Natchez, 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, October and November (0 days).
Average daylight in September /
Average sunshine in September
Natchez, LA
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Natchez, LA
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is August (12.1 days).
Average UV index in September
Natchez, 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
Natchez, LA
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Natchez, 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).
Natchez, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location