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 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
With the onset of September, the average high-temperature subtly recedes from August's 93.7°F (34.3°C) to a still hot 88°F (31.1°C). In Stafford, September nights witness a steady temperature drop to an agreeable 72.5°F (22.5°C).Heat index
September's average heat index is computed to be a blistering 104°F (40°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. 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 highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Stafford, during September, the rain falls for 11.7 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, in Stafford, there are 99.3 rainfall days, and 7.05" (179mm) of precipitation is accumulated.Snowfall
In Stafford, snow does not fall in February through November.Daylight
In Stafford, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:59 am and sunset at 7:44 pm. On the last day of September, in Stafford, sunrise is at 7:15 am and sunset at 7:08 pm CDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Stafford, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
How hot is it in Stafford in September?
What is the average humidity in September in Stafford?
How many days does it rain in September in Stafford?
When it does not snow in Stafford?
What is the average length of the day in September in Stafford?
When are sunrise and sunset in September in Stafford?
How many hours of sunshine does Stafford have in September?
What is the UV index intensity in September in Stafford?
Average temperature in September
Stafford, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (93.7°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in September: 72.5°F
The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in September
Stafford, 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
Stafford, TX
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.8mph).
Average humidity in September
Stafford, TX
- Average humidity in September: 76%
The months with the highest relative humidity are February and March (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Stafford, TX
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is March (0.24").
Average rainfall days in September
Stafford, TX
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (12.1 days).
The month with the least rainy days is January (5.2 days).
Average snowfall days in September
Stafford, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Stafford, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Stafford, TX
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is September (13.6 days).
Average UV index in September
Stafford, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Stafford, TX
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are August and October (Cloud cover 29).
Average visibility in September
Stafford, 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).
Stafford, Texas, USA
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