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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's fiery hot 99.3°F (37.4°C) to a tropical 91.6°F (33.1°C). Throughout the month of September, Cotulla witnesses an average low-temperature of 74.7°F (23.7°C).Heat index
September's mean heat index is computed to be a blisteringly hot 105.8°F (41°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
The average relative humidity in September is 62%.Rainfall
In Cotulla, in September, it is raining for 14 days, with typically 1.93" (49mm) of accumulated precipitation. In Cotulla, during the entire year, the rain falls for 99.5 days and collects up to 12.09" (307mm) of precipitation.Snowfall
February through December are months without snowfall in Cotulla, Texas.Daylight
The average length of the day in September is 12h and 19min.On the first day of September, sunrise is at 7:15 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:23 pm CDT.
Sunshine
In Cotulla, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 7 in September transforms into the following instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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 Cotulla?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Cotulla have 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
Cotulla, TX
- Average high temperature in September: 91.6°F
The warmest month (with the highest average high temperature) is August (99.3°F).
The month with the lowest average high temperature is January (64.8°F).
- Average low temperature in September: 74.7°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in September
Cotulla, TX
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Cotulla, TX
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is May (10.9mph).
The calmest month (with the lowest average wind speed) is December (7.6mph).
Average humidity in September
Cotulla, TX
- Average humidity in September: 62%
The month with the highest relative humidity is December (66%).
The month with the lowest relative humidity is August (53%).
Average rainfall in September
Cotulla, TX
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Cotulla, TX
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is September (14 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in September
Cotulla, 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
Cotulla, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Cotulla, 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 18min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Cotulla, TX
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is August (23.7 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in September
Cotulla, TX
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Cotulla, TX
- Average cloud cover in September: 30
The months with the most cloud cover are February, March, May and December (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Cotulla, 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).
Cotulla, Texas, USA
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