September weather forecastSun, LA
September
Weather in September
September, the first month of the autumn in Sun, is still a hot month, with an average temperature fluctuating between 70.2°F (21.2°C) and 88°F (31.1°C).Temperature
The advent of September sees the average high-temperature at a still hot 88°F (31.1°C), subtly shifted from August's 91.6°F (33.1°C). Throughout September, the average low-temperature dips to an agreeable 70.2°F (21.2°C).Heat index
In September, the heat index is calculated to be an extremely hot 104°F (40°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
The average relative humidity in September is 76%.Rainfall
In Sun, in September, it is raining for 17.4 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 177.1 rainfall days, and 35.67" (906mm) of precipitation is accumulated.Snowfall
In Sun, Louisiana, snow does not fall in February through November.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:45 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In Sun, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 6 in September translates into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sun, LA
- Average high temperature in September: 88°F
The warmest months (with the highest average high temperature) are July and August (91.6°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in September: 70.2°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 (41.7°F).
Average pressure in September
Sun, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Sun, LA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Sun, LA
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Sun, LA
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is August (4.65").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in September
Sun, LA
- Average rainfall days in September: 17.4 days
The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Sun, 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
Sun, 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 February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Sun, LA
- Average daylight in September: 12h and 18min
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 30min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Sun, LA
- Average sunshine days in September: 10.7 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is August (7.1 days).
Average UV index in September
Sun, LA
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Sun, LA
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Sun, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, June, July, August, October and November (6mi).
The months with the lowest visibility are February, March, April, May, September and December (5mi).
