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
McCoy's September weather features a light decline in high-temperatures, reducing from a very hot 98.1°F (36.7°C) in August to a hot 90.3°F (32.4°C). In September, the temperature drops to an average of 73°F (22.8°C) at night.Heat index
The heat index value for September is estimated at a blisteringly hot 104°F (40°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In September, the average relative humidity is 67%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. In McCoy, during the entire year, the rain falls for 121 days and collects up to 15.79" (401mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in September is 12h and 19min.On the first day of September, sunrise is at 7:11 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:19 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In McCoy, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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?
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 in McCoy?
What is the UV index intensity in September?
Average temperature in September
McCoy, TX
- Average high temperature in September: 90.3°F
The warmest month (with the highest average high temperature) is August (98.1°F).
The month with the lowest average high temperature is January (62.8°F).
- Average low temperature in September: 73°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).
Average pressure in September
McCoy, 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 (29.88"Hg).
Average wind speed in September
McCoy, TX
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is May (9.7mph).
The calmest month (with the lowest average wind speed) is September (7mph).
Average humidity in September
McCoy, TX
- Average humidity in September: 67%
The months with the highest relative humidity are March and May (72%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
McCoy, TX
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
McCoy, TX
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is September (15.2 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
McCoy, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
McCoy, 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 March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
McCoy, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
McCoy, TX
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is September (13.7 days).
Average UV index in September
McCoy, 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
McCoy, TX
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
McCoy, 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).
McCoy, Texas, USA
Weather forecast for your location
2. Allow the app to use your location