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 sees an average high-temperature of a still hot 87.4°F (30.8°C), hardly diverging from August's 91°F (32.8°C). An average nighttime temperature of 68.9°F (20.5°C) is noted during the month of September.Heat index
The heat index in September is calculated to be a blisteringly hot 104°F (40°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Know that the heat index computations account for shaded terrains and slight winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. 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 primarily vital for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In Cottonport, the average relative humidity in September is 78%.Rainfall
September and November are months with the least rain when the rain falls for 13.6 days and typically aggregates up to 2.17" (55mm) of rain.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:44 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
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 long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Cottonport, LA
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Cottonport, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Cottonport, LA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and September (5.2mph).
Average humidity in September
Cottonport, LA
- Average humidity in September: 78%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Cottonport, LA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is January (3.58").
The driest months (with the least rainfall) are September and November (2.17").
Average rainfall days in September
Cottonport, LA
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is October (9.6 days).
Average snowfall in September
Cottonport, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Cottonport, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.5 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
Cottonport, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Cottonport, LA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is August (12.5 days).
Average UV index in September
Cottonport, 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
Cottonport, LA
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Cottonport, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, June, October, November and December (6mi).
The months with the lowest visibility are April, May, July, August and September (5mi).
Cottonport, Louisiana, USA
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