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
With September's onset, the weather reveals a slight temperature decrease, transitioning from a very hot 99.1°F (37.3°C) in August to a tropical 91.4°F (33°C). Las Colonias records an average low-temperature of 74.5°F (23.6°C) throughout the month of September.Heat index
For September, the heat index is evaluated at an extremely hot 104°F (40°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In Las Colonias, the average relative humidity in September is 60%.Rainfall
In Las Colonias, in September, during 14.5 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Las Colonias, during the entire year, the rain falls for 101.5 days and collects up to 12.48" (317mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In Las Colonias, Texas, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 7:17 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:25 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 7 transforms into the following instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality 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 Las Colonias?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Las Colonias, TX
- Average high temperature in September: 91.4°F
The warmest month (with the highest average high temperature) is August (99.1°F).
The month with the lowest average high temperature is January (64.8°F).
- Average low temperature in September: 74.5°F
The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in September
Las Colonias, TX
- Average pressure in September: 29.94"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
Las Colonias, TX
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is May (10.9mph).
The calmest month (with the lowest average wind speed) is December (7mph).
Average humidity in September
Las Colonias, TX
- Average humidity in September: 60%
The month with the highest relative humidity is November (64%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Las Colonias, TX
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Las Colonias, TX
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is September (14.5 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Las Colonias, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Las Colonias, 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 February, March, April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Las Colonias, 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 18min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Las Colonias, TX
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is September (13.9 days).
Average UV index in September
Las Colonias, TX
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Las Colonias, TX
- Average cloud cover in September: 30
The months with the most cloud cover are March and May (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Las Colonias, 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).
Las Colonias, Texas, USA
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