September weather forecastDel Rio, TN
September
Weather in September
September, the first month of the autumn in Del Rio, is still a warm month, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 79.9°F (26.6°C).Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from 85.3°F (29.6°C) in August to a still moderately hot 79.9°F (26.6°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 57.2°F (14°C) is recorded during September.Humidity
In September, the average relative humidity is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 11.6 days and accumulates 1.42" (36mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September in Del Rio, sunrise is at 7:04 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm EDT.
Sunshine
The average sunshine in September in Del Rio is 8.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Del Rio, TN
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (44.6°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Del Rio, TN
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Del Rio, TN
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Del Rio, TN
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (78%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in September
Del Rio, TN
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is February (2.87").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Del Rio, TN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (10 days).
Average snowfall in September
Del Rio, TN
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.48").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Del Rio, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Del Rio, TN
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Del Rio, TN
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is July (12 days).
Average UV index in September
Del Rio, TN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Del Rio, TN
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Del Rio, TN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
