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 start of September signals a gentle decrease in the average high-temperature, transitioning from a torrid 96.3°F (35.7°C) in August to a tropical 88°F (31.1°C). During September nights, Addison witnesses a consistent average temperature of 70.7°F (21.5°C).Heat index
The heat index for September is evaluated at a fiery hot 96.8°F (36°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.The standards for the heat index are set for locations in shade and under light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. 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 62%.Rainfall
In September, the rain falls for 14.8 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 142.4 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
In Addison, snow does not fall in March through October.Daylight
In Addison, the average length of the day in September is 12h and 22min.On the first day of September in Addison, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Addison, Texas, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
Is it hot in Addison during September?
What is the average humidity in September in Addison?
How much does it rain in Addison in September?
When it does not snow in Addison?
What is the average length of the day in September in Addison?
What time are sunrise and sunset in September in Addison?
How many hours of sunshine does Addison have in September?
How high is the UV index in September in Addison?
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
Weather forecast for your location
2. Allow the app to use your location
