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 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 minor difference in average high-temperatures between August's 90.3°F (32.4°C) and September's 88.7°F (31.5°C). The nights of September anticipate an average low-temperature of 74.8°F (23.8°C).Heat index
The heat index in September is evaluated at a blisteringly hot 105.8°F (41°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
The months with the highest humidity are September and December, with an average relative humidity of 76%.Rainfall
In September, the rain falls for 21 days. Throughout September, 3.23" (82mm) of precipitation is accumulated. In Del Rio, during the entire year, the rain falls for 172.9 days and collects up to 27.24" (692mm) of precipitation.Daylight
The average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:16 pm EDT.
Sunshine
In Del Rio, the average sunshine in September is 8.9h.UV index
The months with the highest UV index in Del Rio are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During September, 7 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Del Rio have in September?
What are the months with the highest UV index?
What is the UV index intensity in September in Del Rio?
Average temperature in September
Del Rio, FL
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is January (68.4°F).
- Average low temperature in September: 74.8°F
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (52.2°F).
Average pressure in September
Del Rio, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Del Rio, FL
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in September
Del Rio, FL
- Average humidity in September: 76%
The months with the highest relative humidity are September and December (76%).
The months with the lowest relative humidity are March and May (70%).
Average rainfall in September
Del Rio, FL
- Average rainfall in September: 3.23"
The wettest month (with the highest rainfall) is July (5.08").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Del Rio, FL
- Average rainfall days in September: 21 days
The months with the highest number of rainy days are July and August (25 days).
The month with the least rainy days is January (6.8 days).
Average daylight in September /
Average sunshine in September
Del Rio, FL
- 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 5min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Del Rio, FL
- Average sunshine days in September: 6.3 days
The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is August (3.4 days).
Average UV index in September
Del Rio, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in September
Del Rio, FL
- Average cloud cover in September: 30
The months with the most cloud cover are January, February and December (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 25).
Average visibility in September
Del Rio, FL
- 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, Florida, USA
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