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 transition into September reveals an average high-temperature of a still hot 86.9°F (30.5°C), mirroring a close resemblance to August. Romeville experiences a consistent average temperature of 72°F (22.2°C) throughout the nights in September.Heat index
The heat index value during September is calculated to be a torrid 102.2°F (39°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
February, July through September and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In Romeville, in September, it is raining for 18.6 days, with typically 2.36" (60mm) of accumulated precipitation. In Romeville, during the entire year, the rain falls for 172.6 days and collects up to 30.2" (767mm) of precipitation.Snowfall
February through December are months without snowfall in Romeville, Louisiana.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September in Romeville, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:49 pm CDT.
Sunshine
In September, the average sunshine is 10.1h.UV index
The average daily maximum UV index in September in Romeville is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
Is it hot in Romeville during September?
What is the most humid month in Romeville?
What is the average humidity in September in Romeville?
How much does it rain in Romeville in September?
When it does not snow in Romeville?
How many hours of daylight does Romeville have in September?
When are sunrise and sunset in September in Romeville?
How many hours of sunshine does Romeville have in September?
What is the UV index reading in September in Romeville?
Average temperature in September
Romeville, LA
- Average high temperature in September: 86.9°F
The warmest months (with the highest average high temperature) are July and August (89.8°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 72°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in September
Romeville, 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
Romeville, LA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Romeville, LA
- Average humidity in September: 79%
The months with the highest relative humidity are February, July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Romeville, LA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in September
Romeville, LA
- Average rainfall days in September: 18.6 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Romeville, 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
Romeville, 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
Romeville, 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 6min).
Average sunshine days in September
Romeville, LA
- Average sunshine days in September: 8.8 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6.4 days).
Average UV index in September
Romeville, 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
Romeville, LA
- Average cloud cover in September: 27
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Romeville, 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).
Romeville, Louisiana, USA
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