September weather forecast
Delta, LA

As summer slowly recedes, September welcomes the onset of autumn with slightly cooler temperatures. Despite the decrease in heat, the weather remains warm, making it a lovely time of the year for outdoor activities. With a somewhat cooler temperature and lower rainfall of 2.48" (63mm), September is a great time to visit Delta, Louisiana. September also witnesses the wind speed of around 5.2mph (8.4km/h), adding a breeze to the slightly mellow sunshine. As the month progresses into October, the drop in temperature and humidity becomes more apparent.

Temperature

Delta's average high-temperature marks a still hot 87.8°F (31°C) with the advent of September, closely mirroring that of the preceding month. An average low-temperature of 67.6°F (19.8°C) is observed during September nights.

Heat index

During September, the heat index is computed to be a fiery hot 102.2°F (39°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Delta, the average relative humidity in September is 73%.

Rainfall

In September, in Delta, the rain falls for 15 days. Throughout September, 2.48" (63mm) of precipitation is accumulated. In Delta, during the entire year, the rain falls for 169.7 days and collects up to 38.82" (986mm) of precipitation.

Snowfall

In Delta, snow does not fall in April through October.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of September, sunrise is at 6:39 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:49 pm CDT.

Sunshine

The average sunshine in September is 9.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.