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 Johnson Bayou Landing steps into September, the average high-temperature holds at a still hot 86.9°F (30.5°C), hinting at a minor fluctuation from the prior month. Johnson Bayou Landing's nights in September cool down to an average low-temperature of 74.1°F (23.4°C).Heat index
For most parts of September, the heat index is computed to be a very hot 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Johnson Bayou Landing, during September, the rain falls for 16.5 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 132.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Snowfall
January through November are months without snowfall in Johnson Bayou Landing.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September, sunrise is at 6:52 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September is 9.5h.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 unsafe exposure to UV radiation for average individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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 much does it rain in September?
When it does not snow in Johnson Bayou Landing?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Johnson Bayou Landing have in September?
What is the UV index intensity in September?
Average temperature in September
Johnson Bayou Landing, LA
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in September: 74.1°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in September
Johnson Bayou Landing, 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 (29.93"Hg).
Average wind speed in September
Johnson Bayou Landing, LA
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Johnson Bayou Landing, LA
- Average humidity in September: 75%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Johnson Bayou Landing, LA
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is April (0.43").
Average rainfall days in September
Johnson Bayou Landing, LA
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is August (17.9 days).
The months with the least rainy days are January and November (7.8 days).
Average snowfall in September
Johnson Bayou Landing, LA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Johnson Bayou Landing, 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
Johnson Bayou Landing, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Johnson Bayou Landing, LA
- Average sunshine days in September: 10 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is August (8.8 days).
Average UV index in September
Johnson Bayou Landing, 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
Johnson Bayou Landing, LA
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility in September
Johnson Bayou Landing, 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).
Johnson Bayou Landing, Louisiana, USA
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