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 advent of September brings a subtle shift in temperature, with the average high moving from a tropical 94.1°F (34.5°C) in August to a still hot 88.3°F (31.3°C). Joyce records an average nighttime low of 67.8°F (19.9°C) in September.Heat index
For September, the heat index is evaluated at a torrid 102.2°F (39°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
The average relative humidity in September is 73%.Rainfall
In Joyce, in September, it is raining for 12.1 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, there are 130.3 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
In Joyce, Louisiana, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September, sunrise is at 6:46 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:56 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Joyce, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Joyce have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Joyce have in September?
What is the UV index intensity in September?
Average temperature in September
Joyce, LA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 67.8°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in September
Joyce, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Joyce, LA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Joyce, LA
- Average humidity in September: 73%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Joyce, LA
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in September
Joyce, LA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is August (14.6 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in September
Joyce, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Joyce, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Joyce, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Joyce, LA
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is August (13.2 days).
Average UV index in September
Joyce, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Joyce, LA
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Joyce, LA
- Average visibility in September: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Joyce, Louisiana, USA
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