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
North Island experiences an average high-temperature of a still hot 86.7°F (30.4°C) in September, subtly different from August's 90°F (32.2°C). In North Island, the average temperature during the nights of September drops to an agreeable 71.2°F (21.8°C).Heat index
The heat index for September is computed to be a torrid 100.4°F (38°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.The standards for the heat index are set for locations in shade and under light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In North Island, the average relative humidity in September is 78%.Rainfall
In North Island, Louisiana, in September, during 13.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 133.1 rainfall days, and 13.9" (353mm) of precipitation is accumulated.Snowfall
In North Island, 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 the month, sunrise is at 6:48 am and sunset at 7:32 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:57 pm CDT.
Sunshine
In North Island, the average sunshine in September is 9.8h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 suggests this advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in North Island?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September in North Island?
Average temperature in September
North Island, LA
- Average high temperature in September: 86.7°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 (59.5°F).
- Average low temperature in September: 71.2°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).
Average pressure in September
North Island, 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 (29.94"Hg).
Average wind speed in September
North Island, LA
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are February and April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
North Island, LA
- Average humidity in September: 78%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
North Island, LA
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is March (0.71").
Average rainfall days in September
North Island, LA
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is August (17.4 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in September
North Island, LA
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
North Island, 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
North Island, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
North Island, LA
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is August (10.3 days).
Average UV index in September
North Island, LA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
North Island, LA
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
North Island, LA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
North Island, Louisiana, USA
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