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 arrival aligns with a minor decrease in average high-temperatures, from August's torrid 95.5°F (35.3°C) to a hot 88.9°F (31.6°C). Throughout the month of September, the average temperature in Nacogdoches, Texas, dips to an enjoyable 67.6°F (19.8°C) at night.Heat index
The heat index in September is appraised at a scorching 104°F (40°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.One should consider that heat index numbers are for shaded settings and light wind. 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 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In September, the average relative humidity in Nacogdoches is 72%.Rainfall
In Nacogdoches, during September, the rain falls for 14.1 days and regularly aggregates up to 2.72" (69mm) of precipitation. Throughout the year, there are 159.2 rainfall days, and 35.12" (892mm) of precipitation is accumulated.Snowfall
In Nacogdoches, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:54 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:04 pm CDT.
Sunshine
The average sunshine in September in Nacogdoches is 8.8h.UV index
In Nacogdoches, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
How hot is it in Nacogdoches in September?
What is the average humidity in September in Nacogdoches?
How many days does it rain in September in Nacogdoches?
When it does not snow in Nacogdoches?
How many hours of daylight does Nacogdoches have in September?
When is the sunrise / sunset in September in Nacogdoches?
How long on average sun shines in September in Nacogdoches?
What is the UV index reading in September in Nacogdoches?
Average temperature in September
Nacogdoches, TX
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 67.6°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure in September
Nacogdoches, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Nacogdoches, 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
Nacogdoches, TX
- Average humidity in September: 72%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Nacogdoches, TX
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in September
Nacogdoches, TX
- Average rainfall days in September: 14.1 days
The months with the highest number of rainy days are March and June (14.5 days).
The month with the least rainy days is November (11 days).
Average snowfall in September
Nacogdoches, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Nacogdoches, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Nacogdoches, 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 month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Nacogdoches, TX
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Nacogdoches, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Nacogdoches, TX
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Nacogdoches, TX
- Average visibility in September: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (5mi).
Nacogdoches, Texas, USA
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