September weather forecast
Brownville, FL

The first month of the autumn, September, is still a hot month in Brownville, Florida, with an average temperature fluctuating between 88.3°F (31.3°C) and 74.3°F (23.5°C).

Temperature

With the start of September, Brownville measures an average high-temperature of a still tropical 88.3°F (31.3°C), not significantly differing from August's 90.1°F (32.3°C). September generally records an average low-temperature of 74.3°F (23.5°C).

Heat index

The heat index for September is computed to be a blistering 107.6°F (42°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

With an average relative humidity of 80%, September is the most humid month.

Rainfall

In Brownville, in September, it is raining for 23.5 days, with typically 3.31" (84mm) of accumulated precipitation. In Brownville, during the entire year, the rain falls for 187.3 days and collects up to 28.62" (727mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of September, sunrise is at 7:06 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:14 pm EDT.

Sunshine

The average sunshine in September 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: The maximum daily UV index of 7 during September translates into the following directions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.