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 signifies a minor drop in average high-temperature, transitioning from a very hot 96.3°F (35.7°C) in August to a hot 88°F (31.1°C). Addison reports an average low-temperature of 70.7°F (21.5°C) during the nights of September.Heat index
In September, the average heat index is evaluated at a fiery hot 96.8°F (36°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.The standards for the heat index are set for locations in shade and under light breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
The average relative humidity in September is 62%.Rainfall
In September, the rain falls for 14.8 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. Throughout the year, in Addison, there are 142.4 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
March through October are months without snowfall in Addison.Daylight
In September, the average length of the day in Addison, Texas, is 12h and 22min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:12 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 exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Shield from overexposure. Defense against sun-related harm is required. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Addison?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Addison?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Addison, TX
- Average high temperature in September: 88°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 (54.3°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (77°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Addison, 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
Addison, TX
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in September
Addison, 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
Addison, TX
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is October (4.02").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
Addison, TX
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Addison, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Addison, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Addison, 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 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Addison, TX
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is September (13.8 days).
Average UV index in September
Addison, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Addison, TX
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Addison, 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).
Addison, Texas, USA
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