September weather forecast
Webster, FL

The first month of the autumn, September, is still a tropical month in Webster, Florida, with temperature in the range of an average low of 72.7°F (22.6°C) and an average high of 88.2°F (31.2°C).

Temperature

September brings an average high-temperature of a still tropical 88.2°F (31.2°C), showing a slight difference from August's 90.1°F (32.3°C). In Webster, the expected average low-temperature for September is an agreeable 72.7°F (22.6°C).

Heat index

For most parts of September, the heat index is computed to be a blistering 105.8°F (41°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

July through September, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Webster, in September, during 17.4 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 152.7 rainfall days, and 18.11" (460mm) of precipitation is accumulated.

Daylight

In Webster, the average length of the day in September is 12h and 19min.
On the first day of September in Webster, sunrise is at 7:06 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:14 pm EDT.

Sunshine

In Webster, the average sunshine in September is 8.8h.

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 risk from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.