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
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a fiery hot 99°F (37.2°C) in August to a hot 91.4°F (33°C). During September, Dilley observes a consistent average nighttime temperature of 73.8°F (23.2°C).Heat index
September's heat index is estimated at an extremely hot 105.8°F (41°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
In September, the average relative humidity is 63%.Rainfall
In Dilley, during September, the rain falls for 14.7 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, in Dilley, there are 108.4 rainfall days, and 12.48" (317mm) of precipitation is accumulated.Snowfall
In Dilley, Texas, snow does not fall in February through October and December.Daylight
In Dilley, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:15 am and sunset at 7:57 pm. On the last day of September, in Dilley, sunrise is at 7:29 am and sunset at 7:23 pm CDT.
Sunshine
In September, the average sunshine in Dilley is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, the UV index of 6 transforms into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
How hot is it in Dilley in September?
What is the average humidity in September in Dilley?
How much does it rain in Dilley in September?
When it does not snow in Dilley?
What is the average length of the day in September in Dilley?
When is the sunrise / sunset in September in Dilley?
How many hours of sunshine does Dilley have in September?
What is the UV index reading in September in Dilley?
Average temperature in September
Dilley, TX
- Average high temperature in September: 91.4°F
The warmest month (with the highest average high temperature) is August (99°F).
The month with the lowest average high temperature is January (64.2°F).
- Average low temperature in September: 73.8°F
The month with the highest average low temperature is August (78.1°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in September
Dilley, TX
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in September
Dilley, TX
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is May (10.5mph).
The calmest month (with the lowest average wind speed) is December (7.3mph).
Average humidity in September
Dilley, TX
- Average humidity in September: 63%
The month with the highest relative humidity is December (67%).
The month with the lowest relative humidity is August (53%).
Average rainfall in September
Dilley, TX
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Dilley, TX
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is September (14.7 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Dilley, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and November (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Dilley, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 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
Dilley, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Dilley, TX
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is September (14.2 days).
Average UV index in September
Dilley, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Dilley, TX
- Average cloud cover in September: 30
The months with the most cloud cover are March and May (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Dilley, 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).
Dilley, Texas, USA
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