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 beginning of September subtly marks a decrease in the average high-temperature, transitioning from a fiery hot 95.5°F (35.3°C) in August to a hot 89.1°F (31.7°C). An average low-temperature of 68.4°F (20.2°C) is noted during the month of September.Heat index
During September, the heat index is calculated to be a torrid 102.2°F (39°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In September, the average relative humidity is 68%.Rainfall
September is the month with the least rainfall. Rain falls for 9.2 days and accumulates 0.63" (16mm) of precipitation.Snowfall
In Bossier City, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:08 am and sunset at 7:00 pm CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
In Bossier City, Louisiana, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Experience reduced UV exposure by about half when donning a wide-brim hat.
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?
How many hours of daylight does Bossier City have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Bossier City?
What is the UV index intensity in September in Bossier City?
Average temperature in September
Bossier City, LA
- Average high temperature in September: 89.1°F
The warmest months (with the highest average high temperature) are July and August (95.5°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 68.4°F
The month with the highest average low temperature is July (74.5°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Bossier City, LA
- Average pressure in September: 29.98"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
Bossier City, LA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).
Average humidity in September
Bossier City, LA
- Average humidity in September: 68%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Bossier City, LA
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is April (1.65").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in September
Bossier City, LA
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (10.8 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Bossier City, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Bossier City, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Bossier City, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Bossier City, LA
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is September (17.7 days).
Average UV index in September
Bossier City, LA
- Average UV index in September: 6
The months with the highest UV index are May, 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
Bossier City, LA
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Bossier City, LA
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Bossier City, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location