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
Del Rio observes a small decrease in the average high-temperature with the arrival of September, falling from August's very hot 97.9°F (36.6°C) to a tropical 90.5°F (32.5°C). During September, Del Rio records a consistent average nighttime temperature of 73.2°F (22.9°C).Heat index
For September, the heat index is calculated to be a torrid 98.6°F (37°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.One should consider that heat index numbers are for shaded settings and 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 'real feel' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In September, the average relative humidity is 56%.Rainfall
In Del Rio, in September, during 11.3 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 85.2 rainfall days, and 9.61" (244mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:21 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:29 pm CDT.
Sunshine
In Del Rio, the average sunshine in September is 8.8h.UV index
In Del Rio, Texas, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September in Del Rio?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Del Rio have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Del Rio have in September?
What is the UV index reading in September?
Average temperature in September
Del Rio, TX
- Average high temperature in September: 90.5°F
The warmest month (with the highest average high temperature) is August (97.9°F).
The month with the lowest average high temperature is January (63.3°F).
- Average low temperature in September: 73.2°F
The month with the highest average low temperature is August (78.8°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in September
Del Rio, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in September
Del Rio, TX
- Average wind speed in September: 9.7mph
The windiest month (with the highest average wind speed) is June (12.8mph).
The calmest month (with the lowest average wind speed) is December (8.5mph).
Average humidity in September
Del Rio, TX
- Average humidity in September: 56%
The month with the highest relative humidity is November (60%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Del Rio, TX
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Del Rio, TX
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in September
Del Rio, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Del Rio, 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
Del Rio, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days in September
Del Rio, TX
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is May (15.5 days).
Average UV index in September
Del Rio, TX
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Del Rio, TX
- Average cloud cover in September: 28
The months with the most cloud cover are March and May (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Del Rio, 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).
Del Rio, Texas, USA
Weather forecast for your location
2. Allow the app to use your location