September weather forecast
Day, FL

The first month of the autumn, September, is still a tropical month in Day, Florida, with temperature in the range of an average low of 71.8°F (22.1°C) and an average high of 87.4°F (30.8°C).

Temperature

Day's average high-temperature marks a still tropical 87.4°F (30.8°C) with the advent of September, closely mirroring that of the preceding month. September brings an average low-temperature of 71.8°F (22.1°C) to Day.

Heat index

The heat index in September is computed to be a very hot 102.2°F (39°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. 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.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The months with the highest humidity in Day are August, September and December, with an average relative humidity of 77%.

Rainfall

In Day, during September, the rain falls for 18.3 days and regularly aggregates up to 3.27" (83mm) of precipitation. In Day, during the entire year, the rain falls for 168.6 days and collects up to 32.95" (837mm) of precipitation.

Daylight

In Day, Florida, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:10 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:19 pm EDT.

Sunshine

In Day, Florida, the average sunshine in September is 8.7h.

UV index

In Day, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.