September weather forecast
Ona, FL

September, the first month of the autumn in Ona, is still a tropical month, with an average temperature varying between 88°F (31.1°C) and 73.8°F (23.2°C).

Temperature

The advent of September signifies a minor shift to an average high-temperature of a still hot 88°F (31.1°C), aligning closely with August. In September, Ona experiences a temperature dip to an average of 73.8°F (23.2°C) at night.

Heat index

During September, the heat index is appraised at a scorching 107.6°F (42°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

With an average relative humidity of 81%, September is the most humid month.

Rainfall

In Ona, in September, it is raining for 21 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, there are 175.4 rainfall days, and 22.8" (579mm) of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine is 8.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Ward off overexposure. Defence against solar harm is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.