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
The onset of September is marked by a minor decrease in temperature, transitioning from a torrid 96.6°F (35.9°C) in August to a tropical 88.2°F (31.2°C). Throughout September, the temperature tends to fall to a consistent average low of 70.7°F (21.5°C).Heat index
The heat index value for September is evaluated at a very hot 96.8°F (36°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. 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. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
In September, the average relative humidity in Coppell is 61%.Rainfall
In September, in Coppell, the rain falls for 14.2 days. Throughout September, 2.76" (70mm) of precipitation is accumulated. Throughout the year, there are 138.8 rainfall days, and 30.79" (782mm) of precipitation is accumulated.Snowfall
In Coppell, Texas, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of September, in Coppell, 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 Coppell is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Coppell?
What is the average humidity in September in Coppell?
How many days does it rain in September in Coppell?
When it does not snow in Coppell?
What is the average length of the day in September in Coppell?
When are sunrise and sunset in September in Coppell?
How long on average sun shines in September in Coppell?
What is the UV index reading in September in Coppell?
Average temperature in September
Coppell, TX
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Coppell, 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
Coppell, TX
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Coppell, TX
- Average humidity in September: 61%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is August (53%).
Average rainfall in September
Coppell, TX
- Average rainfall in September: 2.76"
The wettest months (with the highest rainfall) are May and October (3.94").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Coppell, TX
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Coppell, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Coppell, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 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
Coppell, 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 months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Coppell, TX
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is May (14 days).
Average UV index in September
Coppell, 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
Coppell, 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
Coppell, 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).
Coppell, Texas, USA
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