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 sees a slight reduction in average high-temperature, with a shift from 94.8°F (34.9°C) in August to a still tropical 88.7°F (31.5°C). Throughout the month of September, San Augustine sees a steady low-temperature average of 67.8°F (19.9°C).Heat index
In September, the average heat index is estimated at a blistering 104°F (40°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
In San Augustine, the average relative humidity in September is 73%.Rainfall
In San Augustine, in September, during 12.8 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 132.7 rainfall days, and 18.27" (464mm) of precipitation is accumulated.Snowfall
In San Augustine, snow does not fall in April through November.Daylight
In San Augustine, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:52 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 7:02 pm CDT.
Sunshine
In San Augustine, the average sunshine in September 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 unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in San Augustine in September?
When it does not snow?
How many hours of daylight does San Augustine have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does San Augustine have in September?
What is the UV index intensity in September?
Average temperature in September
San Augustine, TX
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (94.8°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 67.8°F
The months with the highest average low temperature are July and August (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
San Augustine, 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
San Augustine, TX
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in September
San Augustine, TX
- Average humidity in September: 73%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
San Augustine, TX
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is November (0.87").
Average rainfall days in September
San Augustine, TX
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is August (14.5 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
San Augustine, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.12").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
San Augustine, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
San Augustine, 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 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
San Augustine, TX
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is August (14 days).
Average UV index in September
San Augustine, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
San Augustine, TX
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are August and October (Cloud cover 33).
Average visibility in September
San Augustine, TX
- Average visibility in September: 5mi
The month with the highest visibility is October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, November and December (5mi).
San Augustine, Texas, USA
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