September weather forecast
Valrico, FL

The first month of the autumn, September, is also a hot month in Valrico, Florida, with an average temperature fluctuating between 88.7°F (31.5°C) and 74.8°F (23.8°C).

Temperature

September brings an average high-temperature of a still tropical 88.7°F (31.5°C), nearly identical to the preceding month. During September, Valrico witnesses a consistent average low-temperature of 74.8°F (23.8°C).

Heat index

During September, the heat index is estimated at a blisteringly hot 105.8°F (41°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. 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. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

August, September and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In Valrico, during September, the rain falls for 19.6 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Valrico, during the entire year, the rain falls for 160.9 days and collects up to 16.77" (426mm) of precipitation.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:15 pm EDT.

Sunshine

In Valrico, 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. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.