September weather forecast
Cleveland, FL

The first month of the autumn, September, is also a hot month in Cleveland, Florida, with an average temperature ranging between min 75°F (23.9°C) and max 88.7°F (31.5°C).

Temperature

With September's arrival, Cleveland notes an average high-temperature of a still tropical 88.7°F (31.5°C), closely following the trend of the preceding month. Cleveland records an average nighttime low of 75°F (23.9°C) in September.

Heat index

For most parts of September, the heat index is calculated to be a blisteringly hot 107.6°F (42°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
The metrics for the heat index are tailored for both shady environments and light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The most humid month in Cleveland, Florida, is September, with an average relative humidity of 78%.

Rainfall

In Cleveland, in September, it is raining for 22.6 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, there are 181.8 rainfall days, and 29.37" (746mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September in Cleveland, sunrise is at 7:07 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:14 pm EDT.

Sunshine

The average sunshine in September in Cleveland is 8.9h.

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 exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.