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 from August to September sees an average high-temperature of a still hot 87.3°F (30.7°C), indicating a minor variance from the prior month. In the month of September, Saint Delphine witnesses a consistent average low-temperature of 70.3°F (21.3°C).Heat index
For most parts of September, the heat index is appraised at a blisteringly hot 104°F (40°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', 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. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 16 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Saint Delphine, 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.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:51 pm CDT.
Sunshine
The average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September in Saint Delphine?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September in Saint Delphine?
How long on average sun shines in September in Saint Delphine?
What is the UV index reading in September?
Average temperature in September
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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
Saint Delphine, 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).
Saint Delphine, Louisiana, USA
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