September weather forecastLa Porte, TX
September
Weather in September
September, the first month of the autumn in La Porte, is still a tropical month, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 75.2°F (24°C).Temperature
La Porte records an average high-temperature of a still hot 86.5°F (30.3°C) in September, closely mirroring the climate of the previous month. La Porte reports an average low-temperature of 75.2°F (24°C) during the nights of September.Heat index
The heat index for September is evaluated at a torrid 98.6°F (37°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Note that heat index values are valued for light wind and location in the shade. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In La Porte, the average relative humidity in September is 75%.Rainfall
The month with the most rainfall is September, when the rain falls for 17.4 days and typically aggregates up to 1.93" (49mm) of precipitation.Snowfall
Months with snowfall are January, February and September. September is the first month it typically snows. Throughout September, there are 0.1 snowfall days. Throughout the year, there are 0.4 snowfall days.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:57 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:06 pm CDT.
Sunshine
In La Porte, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
La Porte, TX
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is August (91.6°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 75.2°F
The month with the highest average low temperature is August (79.2°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).
Average pressure in September
La Porte, 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
La Porte, TX
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are August and September (7.1mph).
Average humidity in September
La Porte, 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
La Porte, TX
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is September (1.93").
The driest months (with the least rainfall) are February and March (0.47").
Average rainfall days in September
La Porte, TX
- Average rainfall days in September: 17.4 days
The month with the highest number of rainy days is September (17.4 days).
The months with the least rainy days are January and February (7.7 days).
Average snowfall days in September
La Porte, TX
- Average snowfall days in September: 0.1 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, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
La Porte, TX
- Average daylight in September: 12h and 18min
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 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
La Porte, TX
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is September (10.6 days).
Average UV index in September
La Porte, 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
La Porte, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in September
La Porte, 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).
