September weather forecast
Thibodaux, LA

By September, Louisiana begins to offer relief from the relentless summer heat. The decrease in temperature, rainfall, and humidity is distinctively noticeable compared to August. September, although, remains above the annual average by recording rainfall of 1.93" (49mm). During this month the sky is less cloudy and sunshine hours remain plentiful, making way for a marked entry into the fall season. October brings similar weather patterns but with consistent temperature drops.

Temperature

The transition into September in Thibodaux notes an average high-temperature of a still hot 86.7°F (30.4°C), revealing a mild distinction from the 89.2°F (31.8°C) in August. During the month of September, Thibodaux's nighttime temperature lowers to an average of 72.1°F (22.3°C).

Heat index

The heat index for September is appraised at a sweltering 102.2°F (39°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative 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. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. 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. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The months with the highest humidity are July through September and December, with an average relative humidity of 79%.

Rainfall

In Thibodaux, in September, it is raining for 19.1 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 166.9 rainfall days, and 25.39" (645mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall in Thibodaux, Louisiana.

Daylight

In September, the average length of the day in Thibodaux, Louisiana, 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 Thibodaux, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

Sunshine

In Thibodaux, the average sunshine in September is 10.3h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.