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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a fiery hot 95.9°F (35.5°C) in August to a tropical 88°F (31.1°C). An average low-temperature of 70.3°F (21.3°C) is anticipated throughout the nights during September.Heat index
In September, the average heat index is appraised at a sweltering 96.8°F (36°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in September is 65%.Rainfall
In September, the rain falls for 14.8 days. Throughout September, 2.8" (71mm) of precipitation is accumulated. Throughout the year, there are 139.8 rainfall days, and 32.28" (820mm) of precipitation is accumulated.Snowfall
January, April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 21min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:52 pm. On the last day of September, in Chatt, sunrise is at 7:22 am and sunset at 7:14 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In Chatt, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September in Chatt?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Chatt have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Chatt have in September?
What is the UV index reading in September?
Average temperature in September
Chatt, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 70.3°F
The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (39.9°F).
Average pressure in September
Chatt, 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 (29.91"Hg).
Average wind speed in September
Chatt, TX
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest month (with the lowest average wind speed) is September (6.9mph).
Average humidity in September
Chatt, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Chatt, TX
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is October (4.53").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in September
Chatt, TX
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Chatt, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Chatt, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Chatt, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Chatt, TX
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Chatt, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Chatt, TX
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Chatt, 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).
Chatt, Texas, USA
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