September weather forecast
Highland Park, FL

The first month of the autumn, September, is still a hot month in Highland Park, Florida, with an average temperature fluctuating between 87.8°F (31°C) and 73.9°F (23.3°C).

Temperature

The commencement of September records an average high-temperature of a still hot 87.8°F (31°C), barely varying from August's 90°F (32.2°C). Throughout the month of September, the nighttime temperature dips to an average of 73.9°F (23.3°C).

Heat index

In September, the average heat index is appraised at a scorching 105.8°F (41°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

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

Rainfall

In September, the rain falls for 23.9 days. Throughout September, 4.53" (115mm) of precipitation is accumulated. In Highland Park, during the entire year, the rain falls for 205 days and collects up to 41.3" (1049mm) of precipitation.

Daylight

In Highland Park, Florida, the average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:05 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:13 pm EDT.

Sunshine

The average sunshine in September in Highland Park is 8.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.