September weather forecast
Denton, TX

September commences the slow and graceful descent from summer into fall for Denton, Texas. Temperatures begin to mellow, bringing a sense of relief and anticipation for the more moderate temperatures ahead. Rainfall continues to hover around 2.83" (72mm), lending an unparalleled charm to the city's verdant parks and lush gardens. The arrival of autumn, marked by the dawn of fall foliage, contributes to the cherry atop this climatic cake. Brisk mornings, pleasant afternoons, and cool evenings swiftly become the new norm, much to the delight of Denton's inhabitants.

Temperature

Denton's progression into September involves a minor drop in the average high-temperature, slightly receding from a very hot 95.7°F (35.4°C) in August to a hot 87.3°F (30.7°C). Denton experiences a mean temperature of 69.3°F (20.7°C) during September nights.

Heat index

For September, the heat index is estimated at a fiery hot 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for 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.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in September is 63%.

Rainfall

In Denton, during September, the rain falls for 13.4 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, there are 133.3 rainfall days, and 28.94" (735mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Denton.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 7:03 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:13 pm CDT.

Sunshine

In September, the average sunshine in Denton, Texas, is 8.5h.

UV index

In September, the average daily maximum UV index in Denton is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 6 in September transforms into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.