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's onset records an average high-temperature of a still tropical 87.8°F (31°C), a near match to August's 91.9°F (33.3°C). In September, Port Neches's temperature tends to fall to an average low of 73.2°F (22.9°C) during the night.Heat index
September's mean heat index is evaluated at a torrid 102.2°F (39°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. 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. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In Port Neches, the average relative humidity in September is 75%.Rainfall
In Port Neches, in September, it is raining for 18.4 days, with typically 3.7" (94mm) of accumulated precipitation. In Port Neches, during the entire year, the rain falls for 174 days and collects up to 33.62" (854mm) of precipitation.Snowfall
In Port Neches, snow does not fall in February through November.Daylight
The average length of the day in September is 12h and 20min.On the first day of September in Port Neches, sunrise is at 6:53 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:02 pm CDT.
Sunshine
In Port Neches, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Port Neches?
How many hours of daylight does Port Neches have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Port Neches have in September?
What is the UV index reading in September?
Average temperature in September
Port Neches, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is January (59.7°F).
- Average low temperature in September: 73.2°F
The month with the highest average low temperature is July (77.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in September
Port Neches, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Port Neches, TX
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are August and September (6.6mph).
Average humidity in September
Port Neches, TX
- Average humidity in September: 75%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Port Neches, TX
- Average rainfall in September: 3.7"
The wettest month (with the highest rainfall) is August (5").
The driest month (with the least rainfall) is March (1.69").
Average rainfall days in September
Port Neches, TX
- Average rainfall days in September: 18.4 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in September
Port Neches, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Port Neches, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
Port Neches, 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: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Port Neches, TX
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is August (7 days).
Average UV index in September
Port Neches, 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
Port Neches, TX
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Port Neches, 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).
Port Neches, Texas, USA
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