September weather forecast
Fellsmere, FL

The first month of the autumn, September, is also a moderately hot month in Fellsmere, Florida, with an average temperature fluctuating between 85.8°F (29.9°C) and 75.9°F (24.4°C).

Temperature

The dawn of September sees an average high-temperature of a moderately hot 85.8°F (29.9°C), subtly contrasting with August's 88.7°F (31.5°C). During the nights in September, the temperature in Fellsmere averages to a still warm 75.9°F (24.4°C).

Heat index

The average heat index in September is calculated to be a fiery hot 98.6°F (37°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. 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', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Fellsmere, the average relative humidity in September is 79%.

Rainfall

In Fellsmere, during September, the rain falls for 24.1 days and regularly aggregates up to 4.76" (121mm) of precipitation. Throughout the year, there are 207.6 rainfall days, and 39.8" (1011mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September in Fellsmere, sunrise is at 7:01 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:09 pm EDT.

Sunshine

The average sunshine in September is 9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.