September weather forecast
Groveland, FL

The first month of the autumn, September, is still a hot month in Groveland, Florida, with an average temperature varying between 88.2°F (31.2°C) and 73°F (22.8°C).

Temperature

Transitioning from August to September, Groveland observes an average high-temperature of a still tropical 88.2°F (31.2°C), differing subtly from the previous month. September is noted for a mean low-temperature of 73°F (22.8°C).

Heat index

For September, the heat index is computed to be a blisteringly hot 105.8°F (41°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The months with the highest humidity in Groveland are July through September, with an average relative humidity of 79%.

Rainfall

In Groveland, in September, it is raining for 23.6 days, with typically 4.21" (107mm) of accumulated precipitation. In Groveland, during the entire year, the rain falls for 195.1 days and collects up to 37.28" (947mm) of precipitation.

Daylight

In Groveland, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:05 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:14 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September in Groveland is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in September transforms into this advice:
Deflect overexposure. Sun protection is a necessity. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.