September weather forecast
Pearland, TX

Pearland residents start to enjoy lower temperatures with the onset of September's weather. This month showcases shorter daylight hours and reduced sunshine duration while retaining a slight increase in relative humidity. As summer turns to fall, the UV index begins to decrease steadily, signposting the transition. September stands out for its maximum rainfall measurement, indicating the start of the wet season. This month's temperatures range from 73.8°F (23.2°C) to 87.4°F (30.8°C), introducing cooler periods while running the highest rainfall record of 1.54" (39mm).

Temperature

The transition from August to September sees average high-temperatures adjusting to a still tropical 87.4°F (30.8°C), from a not significantly different 92.8°F (33.8°C). Pearland's temperature lowers to a mean of 73.8°F (23.2°C) during the nights in September.

Heat index

September's mean heat index is calculated to be a fiery hot 102.2°F (39°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In September, the average relative humidity is 75%.

Rainfall

September is the month with the most rainfall. Rain falls for 15.6 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 6:58 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:07 pm CDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

In Pearland, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.