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
September signifies a gentle decline in Ovilla's average high-temperature, easing from a torrid 95.2°F (35.1°C) in August to a tropical 87.4°F (30.8°C). During the nights in September, Ovilla experiences a consistent average temperature of 70°F (21.1°C).Heat index
In September, the heat index is evaluated at a sweltering 96.8°F (36°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Heat index values are typically calculated for conditions of shade and a light breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
The average relative humidity in September is 65%.Rainfall
In Ovilla, in September, during 15.4 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. In Ovilla, Texas, during the entire year, the rain falls for 145.4 days and collects up to 34.53" (877mm) of precipitation.Snowfall
March through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:13 pm CDT.
Sunshine
The average sunshine in September in Ovilla is 8.2h.UV index
In September, the average daily maximum UV index in Ovilla is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. 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
How hot is September in Ovilla?
What is the average humidity in September in Ovilla?
How many days does it rain in September in Ovilla?
When it does not snow in Ovilla?
What is the average length of the day in September in Ovilla?
When are sunrise and sunset in September in Ovilla?
How long on average sun shines in September in Ovilla?
What is the UV index intensity in September in Ovilla?
Average temperature in September
Ovilla, TX
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 70°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Ovilla, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Ovilla, TX
- Average wind speed in September: 6.7mph
The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in September
Ovilla, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Ovilla, TX
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is October (4.65").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
Ovilla, TX
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is September (15.4 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Ovilla, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Ovilla, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ovilla, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Ovilla, TX
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is September (13.5 days).
Average UV index in September
Ovilla, TX
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Ovilla, TX
- Average cloud cover in September: 31
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Ovilla, 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).
Ovilla, Texas, USA
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