September weather forecastRio Hondo, TX
September
Weather in September
September, the first month of the autumn in Rio Hondo, is also a hot month, with temperature in the range of an average low of 78.1°F (25.6°C) and an average high of 90.5°F (32.5°C).Temperature
With September's arrival, Rio Hondo's weather records an average high-temperature of a hot 90.5°F (32.5°C), marking little difference from August's 95°F (35°C). September sees the temperature falling to a mean low of 78.1°F (25.6°C).Heat index
The average heat index in September is appraised at a scorching 107.6°F (42°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In Rio Hondo, Texas, the average relative humidity in September is 69%.Rainfall
In September, in Rio Hondo, the rain falls for 11.5 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. In Rio Hondo, Texas, during the entire year, the rain falls for 79.8 days and collects up to 5.24" (133mm) of precipitation.Snowfall
January, March through December are months without snowfall in Rio Hondo.Daylight
In Rio Hondo, the average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:49 pm. On the last day of September, in Rio Hondo, sunrise is at 7:22 am and sunset at 7:17 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during September leads to these instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rio Hondo, TX
- Average high temperature in September: 90.5°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (68.7°F).
- Average low temperature in September: 78.1°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (55.4°F).
Average pressure in September
Rio Hondo, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Rio Hondo, TX
- Average wind speed in September: 8.9mph
The windiest months (with the highest average wind speed) are March and April (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in September
Rio Hondo, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Rio Hondo, TX
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is February (0.16").
Average rainfall days in September
Rio Hondo, TX
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is September (11.5 days).
The month with the least rainy days is February (4.7 days).
Average snowfall days in September
Rio Hondo, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Rio Hondo, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Rio Hondo, TX
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is September (15.6 days).
Average UV index in September
Rio Hondo, TX
- Average UV index in September: 7
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Rio Hondo, TX
- Average cloud cover in September: 29
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Rio Hondo, 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).
