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
September's arrival shows an average high-temperature of a still hot 87.3°F (30.7°C), hardly different from the previous month. Throughout September, Merlin records an average temperature of 70.3°F (21.3°C) at night.Heat index
September's average heat index is evaluated at a scorching 104°F (40°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Heat index values are typically calculated for conditions of shade and 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 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In September, the average relative humidity in Merlin is 79%.Rainfall
In Merlin, in September, it is raining for 16 days, with typically 1.18" (30mm) of accumulated precipitation. In Merlin, during the entire year, the rain falls for 148.6 days and collects up to 15.51" (394mm) of precipitation.Snowfall
February through December are months without snowfall in Merlin.Daylight
In September, the average length of the day in Merlin is 12h and 20min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of September, in Merlin, sunrise is at 6:58 am and sunset at 6:51 pm CDT.
Sunshine
In September, the average sunshine in Merlin is 9.7h.UV index
In Merlin, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
How hot is it in Merlin in September?
What is the average humidity in September in Merlin?
How much does it rain in Merlin in September?
When it does not snow in Merlin?
How many hours of daylight does Merlin have in September?
What time are sunrise and sunset in September in Merlin?
How many hours of sunshine does Merlin have in September?
What is the UV index intensity in September in Merlin?
Average temperature in September
Merlin, LA
- Average high temperature in September: 87.3°F
The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (59°F).
- Average low temperature in September: 70.3°F
The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).
Average pressure in September
Merlin, 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 and August (29.96"Hg).
Average wind speed in September
Merlin, LA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Merlin, LA
- Average humidity in September: 79%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Merlin, LA
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is March (0.67").
Average rainfall days in September
Merlin, LA
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is August (20.9 days).
The month with the least rainy days is November (7.1 days).
Average snowfall in September
Merlin, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
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
Merlin, 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, November and December (0 days).
Average daylight in September /
Average sunshine in September
Merlin, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Merlin, LA
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is November (21.4 days).
The months with the least sunshine days are July and August (7.3 days).
Average UV index in September
Merlin, 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
Merlin, LA
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Merlin, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, June, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July, August and September (5mi).
Merlin, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
