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
As September commences, the average high-temperature subtly reduces, transitioning from a fiery hot 99.9°F (37.7°C) in August to a hot 92.8°F (33.8°C). Nighttime temperature experiences an average drop to a warm 77.2°F (25.1°C) in September.Heat index
During September, the heat index is appraised at an extremely hot 109.4°F (43°C). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.The heat index's values are generally associated with conditions in shade and light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in September in Sullivan City, Texas, is 63%.Rainfall
The month with the most rainfall in Sullivan City is September, when the rain falls for 15.3 days and typically aggregates up to 2.2" (56mm) of precipitation.Snowfall
February through December are months without snowfall in Sullivan City.Daylight
In September, the average length of the day in Sullivan City is 12h and 18min.On the first day of the month, sunrise is at 7:14 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:21 pm CDT.
Sunshine
In Sullivan City, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Sullivan City is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 7 during September leads to these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
How hot does it get in Sullivan City in September?
What is the average humidity in September in Sullivan City?
What is the wettest month in Sullivan City?
How many days does it rain in September in Sullivan City?
When it does not snow in Sullivan City?
What is the average length of the day in September in Sullivan City?
What time are sunrise and sunset in September in Sullivan City?
How many hours of sunshine does Sullivan City have in September?
What is the UV index intensity in September in Sullivan City?
Average temperature in September
Sullivan City, TX
- Average high temperature in September: 92.8°F
The warmest month (with the highest average high temperature) is August (99.9°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in September: 77.2°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure in September
Sullivan City, TX
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in September
Sullivan City, TX
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is July (13.7mph).
The calmest months (with the lowest average wind speed) are January and December (9.4mph).
Average humidity in September
Sullivan City, TX
- Average humidity in September: 63%
The month with the highest relative humidity is December (66%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Sullivan City, TX
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is September (2.2").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in September
Sullivan City, TX
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Sullivan City, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Sullivan City, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Sullivan City, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Sullivan City, TX
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is September (12.9 days).
Average UV index in September
Sullivan City, TX
- Average UV index in September: 7
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Sullivan City, TX
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Sullivan City, 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).
Sullivan City, Texas, USA
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