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 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
September experiences an average high-temperature of a still tropical 88.3°F (31.3°C), barely different from August's 91.9°F (33.3°C). Glenbrook throughout September, experiences an average nighttime temperature of 70°F (21.1°C).Heat index
The heat index value during September is computed to be a blistering 105.8°F (41°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 are especially crucial 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.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In September, the average relative humidity in Glenbrook is 78%.Rainfall
The months with the least rainfall in Glenbrook are March and September Rain falls for 9.7 days and accumulates 0.28" (7mm) of rain.Snowfall
February through November are months without snowfall.Daylight
In Glenbrook, Louisiana, the average length of the day in September is 12h and 20min.On the first day of September in Glenbrook, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.
Sunshine
In Glenbrook, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
How hot is September in Glenbrook?
What is the average humidity in September in Glenbrook?
What is the driest month in Glenbrook?
How many days does it rain in September in Glenbrook?
When it does not snow in Glenbrook?
How many hours of daylight does Glenbrook have in September?
When are sunrise and sunset in September in Glenbrook?
How long on average sun shines in September in Glenbrook?
What is the UV index reading in September in Glenbrook?
Average temperature in September
Glenbrook, LA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (58.8°F).
- Average low temperature in September: 70°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in September
Glenbrook, 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 (29.96"Hg).
Average wind speed in September
Glenbrook, LA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).
Average humidity in September
Glenbrook, LA
- Average humidity in September: 78%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Glenbrook, LA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is July (1.1").
The driest months (with the least rainfall) are March and September (0.28").
Average rainfall days in September
Glenbrook, LA
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (4.6 days).
Average snowfall days in September
Glenbrook, LA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 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
Glenbrook, 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 3min
The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Glenbrook, LA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in September
Glenbrook, 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
Glenbrook, LA
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Glenbrook, LA
- Average visibility in September: 5mi
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
Glenbrook, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
