September weather forecast
Royster, FL

September, the first month of the autumn in Royster, is still a hot month, with an average temperature varying between 73.6°F (23.1°C) and 88.2°F (31.2°C).

Temperature

The shift into September finds Royster at an average high-temperature of a still tropical 88.2°F (31.2°C), closely comparable to August's conditions. The average temperature drops to a warm 73.6°F (23.1°C) during the night in the month of September.

Heat index

Throughout September, the heat index is appraised at an extremely hot 105.8°F (41°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

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

Rainfall

In Royster, during September, the rain falls for 20.6 days and regularly aggregates up to 3.98" (101mm) of precipitation. Throughout the year, there are 189 rainfall days, and 36.54" (928mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Royster is 12h and 19min.
On the first day of the month, sunrise is at 7:06 am and sunset at 7:48 pm. On the last day of September, in Royster, sunrise is at 7:20 am and sunset at 7:14 pm EDT.

Sunshine

In Royster, Florida, the average sunshine in September is 8.6h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. 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. Boost your sun resistance with garments that are densely woven yet spacious.