September weather forecast
Haines City, FL

The first month of the autumn, September, is still a tropical month in Haines City, Florida, with an average temperature ranging between max 88°F (31.1°C) and min 73.8°F (23.2°C).

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a still tropical 88°F (31.1°C) from August's 90.1°F (32.3°C). Haines City experiences a steady low-temperature of 73.8°F (23.2°C) throughout September.

Heat index

The average heat index in September is appraised at an extremely hot 105.8°F (41°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. 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. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

August and September, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Haines City, in September, it is raining for 22 days, with typically 4.02" (102mm) of accumulated precipitation. In Haines City, during the entire year, the rain falls for 194.2 days and collects up to 35.71" (907mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of September in Haines City, sunrise is at 7:05 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:13 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.