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 is marked by a subtle drop in average high-temperatures, transitioning from a tropical 94.1°F (34.5°C) in August to a still hot 86.7°F (30.4°C). Commerce records an average nighttime low-temperature of 68°F (20°C) throughout September.Heat index
Throughout September, the heat index is evaluated at a torrid 96.8°F (36°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.Know that the heat index computations account for shaded terrains and slight winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. 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 quite important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The average relative humidity in September is 68%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 2.52" (64mm) of precipitation is accumulated. In Commerce, during the entire year, the rain falls for 143.9 days and collects up to 32.24" (819mm) of precipitation.Snowfall
In Commerce, snow does not fall in April through October and December.Daylight
In Commerce, Texas, the average length of the day in September is 12h and 22min.On the first day of September in Commerce, sunrise is at 6:58 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:08 pm CDT.
Sunshine
The average sunshine in September in Commerce is 8.8h.UV index
The average daily maximum UV index in September in Commerce is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Commerce during September?
What is the average humidity in September in Commerce?
How many days does it rain in September in Commerce?
When it does not snow in Commerce?
How many hours of daylight does Commerce have in September?
When are sunrise and sunset in September in Commerce?
How many hours of sunshine does Commerce have in September?
How high is the UV index in September in Commerce?
Average temperature in September
Commerce, TX
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (53.1°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (37°F).
Average pressure in September
Commerce, TX
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Commerce, TX
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).
Average humidity in September
Commerce, TX
- Average humidity in September: 68%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).
Average rainfall in September
Commerce, TX
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is October (3.86").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in September
Commerce, TX
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Commerce, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Commerce, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Commerce, TX
- Average daylight in September: 12h and 2min
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 5min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Commerce, TX
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is January (20.8 days).
The months with the least sunshine days are April and May (14.2 days).
Average UV index in September
Commerce, 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, February, November and December (UV index 3).
Average cloud cover in September
Commerce, TX
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Commerce, 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).
Commerce, Texas, USA
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