September weather forecast
Cooper City, FL

September, the first month of the autumn in Cooper City, is still a tropical month, with an average temperature varying between 79.7°F (26.5°C) and 86.7°F (30.4°C).

Temperature

The transition from August to September sees average high-temperatures adjusting to a still tropical 86.7°F (30.4°C), from a not significantly different 89.1°F (31.7°C). Cooper City registers a gentle descent to an average nighttime low of 79.7°F (26.5°C) in September from its daytime highs.

Heat index

The average heat index in September is computed to be a torrid 98.6°F (37°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Cooper City, the average relative humidity in September is 73%.

Rainfall

In Cooper City, in September, it is raining for 17.4 days, with typically 0.94" (24mm) of accumulated precipitation. In Cooper City, during the entire year, the rain falls for 134 days and collects up to 9.29" (236mm) of precipitation.

Daylight

In September, the average length of the day in Cooper City is 12h and 18min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:08 pm EDT.

Sunshine

The average sunshine in September is 9h.

UV index

The months with the highest UV index in Cooper City are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, an average UV index of 7 transforms into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.