September weather forecastWeslaco, TX
September
Weather in September
The first month of the autumn, September, is still a hot month in Weslaco, Texas, with an average temperature fluctuating between 77.4°F (25.2°C) and 92.5°F (33.6°C).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a hot 92.5°F (33.6°C) from a very hot 97.9°F (36.6°C). In September, in Weslaco, the average low-temperature is a moderately hot 77.4°F (25.2°C).Heat index
In September, the average heat index is computed to be a blisteringly hot 111.2°F (44°C). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
In September, the average relative humidity in Weslaco is 66%.Rainfall
The months with the most rainfall are July and September, with an average 2.01" (51mm) of precipitation.Snowfall
In Weslaco, snow does not fall in February through December.Daylight
The average length of the day in September in Weslaco is 12h and 18min.On the first day of the month, sunrise is at 7:12 am and sunset at 7:51 pm. On the last day of September, in Weslaco, Texas, sunrise is at 7:24 am and sunset at 7:19 pm CDT.
Sunshine
In Weslaco, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index in Weslaco is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 7 during September translates into the following guidance:
Stay clear of intense sun exposure. Solar protection is of utmost significance. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Weslaco, TX
- Average high temperature in September: 92.5°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 (69.6°F).
- Average low temperature in September: 77.4°F
The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).
Average pressure in September
Weslaco, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in September
Weslaco, TX
- Average wind speed in September: 8.5mph
The windiest months (with the highest average wind speed) are March, April and May (11.7mph).
The calmest month (with the lowest average wind speed) is September (8.5mph).
Average humidity in September
Weslaco, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Weslaco, TX
- Average rainfall in September: 2.01"
The wettest months (with the highest rainfall) are July and September (2.01").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Weslaco, TX
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is September (14.4 days).
The month with the least rainy days is July (6.4 days).
Average snowfall in September
Weslaco, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
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
Weslaco, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Weslaco, 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 18min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Weslaco, TX
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is September (13.8 days).
Average UV index in September
Weslaco, TX
- Average UV index in September: 7
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 4).
Average cloud cover in September
Weslaco, TX
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Weslaco, 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).
