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 unfolds, the average high-temperature reaches a still tropical 86.5°F (30.3°C), hinting at a slight fluctuation from the previous month. An average low-temperature of 69.8°F (21°C) is observed during the September nights.Heat index
The heat index value for September is estimated at a very hot 102.2°F (39°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In Ossun, Louisiana, the average relative humidity in September is 80%.Rainfall
In Ossun, during September, the rain falls for 15.4 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Ossun, during the entire year, the rain falls for 170.6 days and collects up to 35.79" (909mm) of precipitation.Snowfall
In Ossun, snow does not fall in February through November.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:45 am and sunset at 7:30 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 9.7h.UV index
In Ossun, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total 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
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Ossun have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Ossun have in September?
What is the UV index reading in September?
Average temperature in September
Ossun, LA
- Average high temperature in September: 86.5°F
The warmest months (with the highest average high temperature) are July and August (90°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in September
Ossun, 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 (29.95"Hg).
Average wind speed in September
Ossun, LA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and September (5.2mph).
Average humidity in September
Ossun, LA
- Average humidity in September: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Ossun, LA
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in September
Ossun, LA
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Ossun, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Ossun, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ossun, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Ossun, LA
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in September
Ossun, LA
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Ossun, LA
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility in September
Ossun, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
Ossun, Louisiana, USA
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