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
San Augustine's progression into September involves a gentle drop in the average high-temperature, from a hot 94.8°F (34.9°C) in August to a still tropical 88.7°F (31.5°C). During September, the temperature tends to dip to an average of 67.8°F (19.9°C) at night.Heat index
The heat index value during September is estimated at an extremely hot 104°F (40°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
The average relative humidity in September is 73%.Rainfall
In San Augustine, in September, it is raining for 12.8 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 132.7 rainfall days, and 18.27" (464mm) of precipitation is accumulated.Snowfall
In San Augustine, Texas, 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 September, the average sunshine in San Augustine is 8.9h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 6 in September transforms into this advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
How hot does it get in San Augustine in September?
What is the average humidity in September in San Augustine?
How much does it rain in San Augustine in September?
When it does not snow in San Augustine?
What is the average length of the day in September in San Augustine?
When is the sunrise / sunset in September in San Augustine?
How long on average sun shines in September in San Augustine?
What is the UV index reading in September in San Augustine?
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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