September weather forecast
Marvina, FL

The first month of the autumn, September, is also a hot month in Marvina, Florida, with an average temperature varying between 88.7°F (31.5°C) and 74.8°F (23.8°C).

Temperature

Marvina, Florida, experiences an average high-temperature of a still tropical 88.7°F (31.5°C) in September, subtly different from August's 90.3°F (32.4°C). During September, Marvina consistently records a temperature low averaging a warm 74.8°F (23.8°C).

Heat index

During September, the heat index is appraised at an extremely hot 105.8°F (41°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. 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 body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

August, September and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In September, the rain falls for 19.6 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. In Marvina, during the entire year, the rain falls for 160.9 days and collects up to 16.77" (426mm) of precipitation.

Daylight

In September, the average length of the day in Marvina is 12h and 19min.
On the first day of September in Marvina, Florida, sunrise is at 7:07 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:15 pm EDT.

Sunshine

In Marvina, the average sunshine in September is 8.9h.

UV index

The months with the highest UV index in Marvina are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a regular UV index of 7 translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.