September weather forecast
Eustis, FL

The first month of the autumn, September, is still a tropical month in Eustis, Florida, with an average temperature fluctuating between 88.5°F (31.4°C) and 73.2°F (22.9°C).

Temperature

Eustis greets September with an average high-temperature of a still hot 88.5°F (31.4°C), marking a slight deviation from the preceding month. Eustis records an average low-temperature of 73.2°F (22.9°C) throughout the month of September.

Heat index

September's average heat index is estimated at a blistering 105.8°F (41°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

July through September, with an average relative humidity of 78%, are the most humid months.

Rainfall

In Eustis, during September, the rain falls for 22.3 days and regularly aggregates up to 4.02" (102mm) of precipitation. Throughout the year, there are 193.1 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of September, 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

In Eustis, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.