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
At the start of September, Baytown's average high-temperature reaches a still hot 87.1°F (30.6°C), subtly different from the preceding month. In September, the average low-temperature is a moderately hot 74.3°F (23.5°C).Heat index
For most parts of September, the heat index is appraised at a very hot 100.4°F (38°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In September, the average relative humidity is 75%.Rainfall
The month with the most rainfall is September, when the rain falls for 18.5 days and typically aggregates up to 2.8" (71mm) of precipitation.Snowfall
In Baytown, snow does not fall in March through November.Daylight
In Baytown, the average length of the day in September is 12h and 20min.On the first day of September in Baytown, 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
The average sunshine in September in Baytown is 8.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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?
What is the rainiest month?
How much does it rain in Baytown in September?
When it does not snow?
How many hours of daylight does Baytown have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Baytown, TX
- Average high temperature in September: 87.1°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 (60.3°F).
- Average low temperature in September: 74.3°F
The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in September
Baytown, 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
Baytown, TX
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are August and September (6.8mph).
Average humidity in September
Baytown, 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
Baytown, TX
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is September (2.8").
The driest month (with the least rainfall) is March (0.47").
Average rainfall days in September
Baytown, TX
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is September (18.5 days).
The month with the least rainy days is February (7.7 days).
Average snowfall days in September
Baytown, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 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
Baytown, 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 5min
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
Baytown, TX
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is March (20.8 days).
The month with the least sunshine days is September (9.8 days).
Average UV index in September
Baytown, 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
Baytown, 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
Baytown, 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).
Baytown, Texas, USA
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