September weather forecast
Allandale, FL

The first month of the autumn, September, is still a hot month in Allandale, Florida, with an average temperature varying between 75.9°F (24.4°C) and 86.4°F (30.2°C).

Temperature

With September's arrival, Allandale's weather records an average high-temperature of a still tropical 86.4°F (30.2°C), marking little difference from August's 89.2°F (31.8°C). Throughout the nights in September, Allandale experiences an average low-temperature of 75.9°F (24.4°C).

Heat index

The heat index for September is calculated to be a sweltering 98.6°F (37°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In Allandale, in September, it is raining for 19.7 days, with typically 4.21" (107mm) of accumulated precipitation. Throughout the year, there are 186.5 rainfall days, and 32.6" (828mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Allandale, Florida, is 12h and 19min.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of September, in Allandale, sunrise is at 7:16 am and sunset at 7:10 pm EDT.

Sunshine

The average sunshine in September in Allandale is 8.8h.

UV index

The months with the highest UV index in Allandale are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 7 during September leads to these instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.