September weather forecast
Brownville, FL

September, the first month of the autumn in Brownville, is still a tropical month, with an average temperature ranging between max 88.3°F (31.3°C) and min 74.3°F (23.5°C).

Temperature

Brownville experiences a minor change to a still hot 88.3°F (31.3°C) in average high-temperature during September, closely reflecting August. In September, Brownville records an average nighttime temperature of 74.3°F (23.5°C).

Heat index

The heat index in September is computed to be a scorching 107.6°F (42°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The most humid month in Brownville is September, with an average relative humidity of 80%.

Rainfall

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

Daylight

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

In Brownville, Florida, the average sunshine in September is 8.9h.

UV index

The months with the highest UV index in Brownville are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.