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 hot 94.8°F (34.9°C) in August to a still tropical 87.8°F (31°C). Grand Saline throughout September, records an average low-temperature of 67.6°F (19.8°C).Heat index
September's average heat index is computed to be a fiery hot 98.6°F (37°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. 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. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
The average relative humidity in September is 69%.Rainfall
In Grand Saline, Texas, in September, during 14.6 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 146.6 rainfall days, and 30.83" (783mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:08 pm CDT.
Sunshine
In Grand Saline, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 6 during September translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Grand Saline have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Grand Saline have in September?
What is the UV index intensity in September in Grand Saline?
Average temperature in September
Grand Saline, TX
- Average high temperature in September: 87.8°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 (54°F).
- Average low temperature in September: 67.6°F
The months with the highest average low temperature are July and August (73.4°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Grand Saline, 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 (29.92"Hg).
Average wind speed in September
Grand Saline, TX
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is September (5.8mph).
Average humidity in September
Grand Saline, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Grand Saline, TX
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is October (4.13").
The driest month (with the least rainfall) is January (1.65").
Average rainfall days in September
Grand Saline, TX
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is September (14.6 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Grand Saline, 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 November (0").
Average snowfall days in September
Grand Saline, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Grand Saline, 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 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Grand Saline, TX
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is January (21.7 days).
The month with the least sunshine days is September (13.9 days).
Average UV index in September
Grand Saline, 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, November and December (UV index 3).
Average cloud cover in September
Grand Saline, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Grand Saline, 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).
Grand Saline, Texas, USA
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