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
As Helvetia welcomes September, the average high-temperature records at a still tropical 87.3°F (30.7°C), marking an insignificant deviation from the prior month. An average temperature of 70.5°F (21.4°C) is recorded during the nights in September.Heat index
The heat index for September is calculated to be a blistering 104°F (40°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Heat index evaluations are typically in the context of light winds and shaded environments. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
February, September and December, with an average relative humidity of 80%, are the most humid months in Helvetia.Rainfall
In Helvetia, in September, it is raining for 17.9 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 165.4 rainfall days, and 26.93" (684mm) of precipitation is accumulated.Snowfall
In Helvetia, snow does not fall in February through December.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of September, in Helvetia, Louisiana, sunrise is at 6:56 am and sunset at 6:49 pm CDT.
Sunshine
In Helvetia, the average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September in Helvetia, Louisiana, is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
How hot is September in Helvetia?
What are the most humid months in Helvetia?
What is the average humidity in September in Helvetia?
How much does it rain in Helvetia in September?
When it does not snow in Helvetia?
How many hours of daylight does Helvetia have in September?
When is the sunrise / sunset in September in Helvetia?
How many hours of sunshine does Helvetia have in September?
What is the UV index reading in September in Helvetia?
Average temperature in September
Helvetia, LA
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (60.1°F).
- Average low temperature in September: 70.5°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in September
Helvetia, 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
Helvetia, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Helvetia, LA
- Average humidity in September: 80%
The months with the highest relative humidity are February, September and December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Helvetia, LA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (4.25").
The driest month (with the least rainfall) is November (1.18").
Average rainfall days in September
Helvetia, LA
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Helvetia, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
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
Helvetia, 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
Helvetia, 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 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Helvetia, LA
- Average sunshine days in September: 9.9 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Helvetia, 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
Helvetia, LA
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Helvetia, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, June, August, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July and September (5mi).
Helvetia, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
