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 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's onset sees an average high-temperature of a still hot 87.3°F (30.7°C), exhibiting a slight fluctuation from the previous month. In September, Sweeny records an average nighttime temperature of 73.6°F (23.1°C).Heat index
In September, the average heat index is computed to be a very hot 102.2°F (39°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
In September, the average relative humidity is 77%.Rainfall
September is the month with the most rainfall in Sweeny. Rain falls for 17.5 days and accumulates 2.68" (68mm) of precipitation.Snowfall
In Sweeny, snow does not fall in March through November.Daylight
In Sweeny, the average length of the day in September is 12h and 19min.On the first day of September in Sweeny, sunrise is at 7:00 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:09 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 6 during September translates into the following directions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Sweeny?
What is the average humidity in September in Sweeny?
What is the rainiest month in Sweeny?
How many days does it rain in September in Sweeny?
When it does not snow in Sweeny?
How many hours of daylight does Sweeny have in September?
When is the sunrise / sunset in September in Sweeny?
How long on average sun shines in September in Sweeny?
How high is the UV index in September in Sweeny?
Average temperature in September
Sweeny, TX
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is January (61.5°F).
- Average low temperature in September: 73.6°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 (47.7°F).
Average pressure in September
Sweeny, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Sweeny, TX
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).
Average humidity in September
Sweeny, TX
- Average humidity in September: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Sweeny, TX
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is September (2.68").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in September
Sweeny, TX
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is September (17.5 days).
The month with the least rainy days is February (8.4 days).
Average snowfall days in September
Sweeny, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Sweeny, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Sweeny, TX
- Average sunshine days in September: 10 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is September (10 days).
Average UV index in September
Sweeny, 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
Sweeny, TX
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Sweeny, 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).
Sweeny, Texas, USA
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