September weather forecast
Carrollton, TX

September announces the arrival of autumn in Carrollton, Texas, significantly reducing temperatures but still maintaining the city's warmth, with an average high temperature of 88°F (31.1°C). Rainfall rises and cloud coverage increases, inviting cooler and more pleasant weather conditions. It calls for comfort outdoor pursuits as it breaks the persistent heat of the summer. The shrinking length of daylight becomes more noticeable, heralding the coming of the cooler months. Despite the heat withdrawal, the weather maintains a mild summer feeling, making it favorable for barbecues and outdoor festivals.

Temperature

September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a sweltering 96.3°F (35.7°C) in August to a hot 88°F (31.1°C). An average low-temperature of 70.7°F (21.5°C) is observed during September nights.

Heat index

September's heat index is estimated at a fiery hot 96.8°F (36°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In September, the average relative humidity is 62%.

Rainfall

In September, the rain falls for 14.8 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. In Carrollton, during the entire year, the rain falls for 142.4 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

In Carrollton, snow does not fall in March through October.

Daylight

In Carrollton, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 7:02 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:13 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 6 during September translates into the following guidance:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.