September weather forecastKirbyville, TX
September
Weather in September
The first month of the autumn, September, is still a hot month in Kirbyville, Texas, with an average temperature ranging between max 88.9°F (31.6°C) and min 69.1°F (20.6°C).Temperature
The start of September comes with a small reduction in the average high-temperature, subtly receding from 94.5°F (34.7°C) in August to a still hot 88.9°F (31.6°C). Kirbyville, in September, witnesses an average low-temperature of 69.1°F (20.6°C).Heat index
Throughout September, the heat index is evaluated at a blisteringly hot 105.8°F (41°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Heat index determinations are made taking into account the shade and light air movements. 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 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 are particularly relevant to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
The average relative humidity in September is 76%.Rainfall
In Kirbyville, during September, the rain falls for 16.8 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, there are 175 rainfall days, and 35.28" (896mm) of precipitation is accumulated.Snowfall
In Kirbyville, snow does not fall in March through November.Daylight
In Kirbyville, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:08 am and sunset at 7:01 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Kirbyville, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kirbyville, TX
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (58.5°F).
- Average low temperature in September: 69.1°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Kirbyville, 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
Kirbyville, 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 and August (4.6mph).
Average humidity in September
Kirbyville, TX
- Average humidity in September: 76%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Kirbyville, TX
- Average rainfall in September: 3.07"
The wettest month (with the highest rainfall) is August (4.33").
The driest months (with the least rainfall) are February and November (2.13").
Average rainfall days in September
Kirbyville, TX
- Average rainfall days in September: 16.8 days
The month with the highest number of rainy days is August (19.8 days).
The month with the least rainy days is November (10.9 days).
Average snowfall in September
Kirbyville, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Kirbyville, 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
Kirbyville, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Kirbyville, TX
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is August (9.4 days).
Average UV index in September
Kirbyville, TX
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Kirbyville, TX
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is October (Cloud cover 33).
Average visibility in September
Kirbyville, TX
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).





