September weather forecastFort Worth, TX
September
Weather in September
With the arrival of September, Fort Worth begins its transition into autumn. Rainfall increases marginally to 2.44" (62mm), while humidity tends to stay consistent compared to August. Fall's onset is marked by vibrant hues in nature, making the city particularly photogenic. Mid-September to October is typically regarded as transition period, with both foliage and temperatures changing dramatically. Gradual cooling and the return of regular rainfall highlight the end of the summer season.Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a sweltering 95.7°F (35.4°C) in August to a tropical 87.4°F (30.8°C). Fort Worth's average low-temperature is measured at an agreeable 69.6°F (20.9°C) during September.Heat index
September's mean heat index is calculated to be a fiery hot 95°F (35°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. 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. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In Fort Worth, the average relative humidity in September is 64%.Rainfall
In September, the rain falls for 14.9 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 132.4 rainfall days, and 25.87" (657mm) of precipitation is accumulated.Snowfall
In Fort Worth, snow does not fall in March through October.Daylight
In Fort Worth, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:04 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:14 pm CDT.
Sunshine
In Fort Worth, the average sunshine in September is 8.5h.UV index
In Fort Worth, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fort Worth, TX
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (55.4°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Fort Worth, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Fort Worth, TX
- Average wind speed in September: 6.7mph
The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in September
Fort Worth, TX
- Average humidity in September: 64%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Fort Worth, TX
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is October (3.35").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in September
Fort Worth, TX
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is September (14.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Fort Worth, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Fort Worth, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Fort Worth, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Fort Worth, TX
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is September (13.2 days).
Average UV index in September
Fort Worth, TX
- Average UV index in September: 6
The months with the highest UV index are May, 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
Fort Worth, TX
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Fort Worth, 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).
