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 shift into September uncovers an average high-temperature of a still tropical 86.9°F (30.5°C), subtly different from the previous month. An average nighttime temperature of 72.5°F (22.5°C) is noted in Garyville during the month of September.Heat index
The heat index value for September is calculated to be a torrid 102.2°F (39°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Keep in mind the heat index values are meant for areas in shade and with light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
The average relative humidity in September is 78%.Rainfall
In September, in Garyville, the rain falls for 18.3 days. Throughout September, 2.76" (70mm) of precipitation is accumulated. In Garyville, during the entire year, the rain falls for 174 days and collects up to 34.76" (883mm) of precipitation.Snowfall
February through December are months without snowfall in Garyville.Daylight
The average length of the day in September in Garyville is 12h and 20min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:24 pm. On the last day of September, in Garyville, sunrise is at 6:55 am and sunset at 6:48 pm CDT.
Sunshine
The average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index in Garyville is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 in September translates into these instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
How hot does it get in Garyville in September?
What is the average humidity in September in Garyville?
How much does it rain in Garyville in September?
When it does not snow in Garyville?
How many hours of daylight does Garyville have in September?
When are sunrise and sunset in September in Garyville?
How long on average sun shines in September in Garyville?
How high is the UV index in September in Garyville?
Average temperature in September
Garyville, LA
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in September: 72.5°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in September
Garyville, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in September
Garyville, LA
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are January, February and April (8mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in September
Garyville, LA
- Average humidity in September: 78%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Garyville, LA
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is July (5.55").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in September
Garyville, LA
- Average rainfall days in September: 18.3 days
The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is November (7.7 days).
Average snowfall in September
Garyville, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Garyville, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Garyville, 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: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Garyville, LA
- Average sunshine days in September: 8.7 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6 days).
Average UV index in September
Garyville, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Garyville, LA
- Average cloud cover in September: 27
The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Garyville, 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).
Garyville, Louisiana, USA
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