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
In September, the average high-temperature marginally drops from 93.6°F (34.2°C) in August to a still hot 86.2°F (30.1°C). An average minimum temperature of 67.6°F (19.8°C) is recorded in Stonewall during the month of September.Heat index
September's mean heat index is calculated to be a very hot 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. 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. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
In September, the average relative humidity in Stonewall is 67%.Rainfall
In Stonewall, Texas, in September, during 14.8 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Stonewall, during the entire year, the rain falls for 129.3 days and collects up to 15.87" (403mm) of precipitation.Snowfall
April through October are months without snowfall in Stonewall.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 7:11 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:20 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Stonewall in September?
What is the average humidity in September in Stonewall?
How many days does it rain in September in Stonewall?
When it does not snow in Stonewall?
What is the average length of the day in September in Stonewall?
When is the sunrise / sunset in September in Stonewall?
How many hours of sunshine does Stonewall have in September?
What is the UV index reading in September in Stonewall?
Average temperature in September
Stonewall, TX
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is August (93.6°F).
The month with the lowest average high temperature is January (58.8°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is August (72.3°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in September
Stonewall, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Stonewall, TX
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are March and April (10.9mph).
The calmest month (with the lowest average wind speed) is September (7.3mph).
Average humidity in September
Stonewall, TX
- Average humidity in September: 67%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Stonewall, TX
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in September
Stonewall, TX
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in September
Stonewall, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Stonewall, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.6 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
Stonewall, TX
- Average daylight in September: 12h and 2min
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 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 5h and 48min).
Average sunshine days in September
Stonewall, TX
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Stonewall, 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 3).
Average cloud cover in September
Stonewall, TX
- Average cloud cover in September: 33
The month with the most cloud cover is May (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Stonewall, 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).
Stonewall, Texas, USA
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