September weather forecast
Alexandria, LA

September brings a noticeable dip in temperature from the heat of August, marking the inception of cooler weather in Alexandria, Louisiana. The fall season introduces fewer daylight hours and declining humidity rates, presenting more agreeable weather conditions. Transitioning through the month, the city observes the last of the summer showers, with noticeable rainfall reduction. Despite the decrease in sunshine hours from August, September holds onto many clear-sky days. October continues this gradual decline in temperatures and further reduction in rainfall setting the course for the impending winter months.

Temperature

The shift to September in Alexandria signals an average high-temperature of a still tropical 88°F (31.1°C), subtly varied from August's 92.8°F (33.8°C). In Alexandria, the nighttime temperature averages to a pleasant 68°F (20°C) during September.

Heat index

Throughout September, the heat index is calculated to be a blisteringly hot 104°F (40°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In September, the average relative humidity in Alexandria is 76%.

Rainfall

In Alexandria, Louisiana, in September, it is raining for 14.8 days, with typically 2.44" (62mm) of accumulated precipitation. In Alexandria, during the entire year, the rain falls for 164.9 days and collects up to 35.43" (900mm) of precipitation.

Snowfall

March through November are months without snowfall in Alexandria, Louisiana.

Daylight

In Alexandria, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 6:46 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:55 pm CDT.

Sunshine

In Alexandria, the average sunshine in September is 9.4h.

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 exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.