September weather forecast
Rex, FL

The first month of the autumn, September, is also a hot month in Rex, Florida, with an average temperature fluctuating between 72.3°F (22.4°C) and 88°F (31.1°C).

Temperature

September's presence records an average high-temperature of a still tropical 88°F (31.1°C), closely mirroring August's climate. Rex encounters a steady low-temperature average of 72.3°F (22.4°C) throughout the month of September.

Heat index

In September, the average heat index is appraised at an extremely hot 105.8°F (41°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Note that heat index values are valued for light wind and location in the shade. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

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

Rainfall

In September, in Rex, the rain falls for 15.6 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. In Rex, during the entire year, the rain falls for 154.9 days and collects up to 22.28" (566mm) of precipitation.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:06 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:14 pm EDT.

Sunshine

In Rex, the average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.