September weather forecast
Limestone, FL

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

Temperature

Limestone's weather in September, with an average high-temperature of a still tropical 88.3°F (31.3°C), subtly shifts from August's 90.1°F (32.3°C). Throughout the month of September, the nighttime temperature dips to an average of 74.3°F (23.5°C).

Heat index

In September, the heat index is calculated to be a blistering 107.6°F (42°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

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

Rainfall

In Limestone, in September, it is raining for 23.5 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, in Limestone, there are 187.3 rainfall days, and 28.62" (727mm) of precipitation is accumulated.

Daylight

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

Sunshine

In Limestone, 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 in Limestone. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.