Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September is characterized by a slight reduction in average high-temperature, easing from a very hot 96.3°F (35.7°C) in August to a hot 87.8°F (31°C). Nighttime temperature lowers to an average of 70.3°F (21.3°C) in September.Heat index
For September, the heat index is estimated at a sweltering 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In Flower Mound, the average relative humidity in September is 62%.Rainfall
In Flower Mound, in September, during 12.8 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Flower Mound, during the entire year, the rain falls for 123.4 days and collects up to 24.45" (621mm) of precipitation.Snowfall
April through November are months without snowfall in Flower Mound.Daylight
In September, the average length of the day in Flower Mound is 12h and 22min.On the first day of September, sunrise is at 7:03 am and sunset at 7:52 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 is 8.4h.UV index
In September, the average daily maximum UV index in Flower Mound is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. 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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
Is it hot in Flower Mound during September?
What is the average humidity in September in Flower Mound?
How much does it rain in Flower Mound in September?
When it does not snow in Flower Mound?
What is the average length of the day in September in Flower Mound?
When are sunrise and sunset in September in Flower Mound?
How many hours of sunshine does Flower Mound have in September?
What is the UV index reading in September in Flower Mound?
Average temperature in September
Flower Mound, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.5°F).
- Average low temperature in September: 70.3°F
The months with the highest average low temperature are July and August (76.6°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Flower Mound, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Flower Mound, TX
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Flower Mound, TX
- Average humidity in September: 62%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Flower Mound, TX
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Flower Mound, TX
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Flower Mound, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Flower Mound, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Flower Mound, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Flower Mound, TX
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (24.6 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in September
Flower Mound, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Flower Mound, TX
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Flower Mound, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Flower Mound, Texas, USA
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