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
A subtle shift in San Patricio's weather is observed as August turns into September, with the average high temperature reducing from a torrid 96.1°F (35.6°C) to a hot 90.1°F (32.3°C). The average nighttime temperature lowers to a moderately hot 75.2°F (24°C) throughout September.Heat index
The heat index value for September is estimated at a blistering 105.8°F (41°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The average relative humidity in September is 70%.Rainfall
The month with the most rainfall is September, when the rain falls for 17.1 days and typically aggregates up to 2.48" (63mm) of precipitation.Snowfall
In San Patricio, snow does not fall in February through December.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of September, in San Patricio, sunrise is at 7:23 am and sunset at 7:17 pm CDT.
Sunshine
In September, the average sunshine in San Patricio is 8.5h.UV index
The average daily maximum UV index in September in San Patricio is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in San Patricio in September?
What is the average humidity in September in San Patricio?
What is the wettest month in San Patricio?
How many days does it rain in September in San Patricio?
When it does not snow in San Patricio?
What is the average length of the day in September in San Patricio?
What time are sunrise and sunset in September in San Patricio?
How long on average sun shines in September in San Patricio?
How high is the UV index in September in San Patricio?
Average temperature in September
San Patricio, TX
- Average high temperature in September: 90.1°F
The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (64.4°F).
- Average low temperature in September: 75.2°F
The month with the highest average low temperature is August (78.1°F).
The coldest month (with the lowest average low temperature) is January (48.7°F).
Average pressure in September
San Patricio, TX
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
San Patricio, TX
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is May (10.7mph).
The calmest month (with the lowest average wind speed) is September (8mph).
Average humidity in September
San Patricio, TX
- Average humidity in September: 70%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
San Patricio, TX
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is September (2.48").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in September
San Patricio, TX
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is September (17.1 days).
The months with the least rainy days are July and August (8.3 days).
Average snowfall in September
San Patricio, 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
San Patricio, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
San Patricio, 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 24min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
San Patricio, TX
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is July (20.9 days).
The month with the least sunshine days is September (10.9 days).
Average UV index in September
San Patricio, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
San Patricio, TX
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
San Patricio, 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).
San Patricio, Texas, USA
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