September weather forecast
Middle River, FL

The first month of the autumn, September, is still a tropical month in Middle River, Florida, with an average temperature varying between 79.7°F (26.5°C) and 86.4°F (30.2°C).

Temperature

September observes an average high-temperature of a still hot 86.4°F (30.2°C), marking an insignificant difference from August's 88°F (31.1°C). The nighttime temperature in Middle River in September experiences a minor dip, averaging a warm 79.7°F (26.5°C).

Heat index

September's average heat index is evaluated at a fiery hot 98.6°F (37°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. 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 extremely significant for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Middle River, the average relative humidity in September is 74%.

Rainfall

In Middle River, in September, during 18.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 125.3 rainfall days, and 8.35" (212mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 18min.
On the first day of September in Middle River, Florida, sunrise is at 7:01 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:08 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 in Middle River. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.