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 sees a slight reduction in average high-temperature, with a shift from a torrid 95°F (35°C) in August to a tropical 87.1°F (30.6°C). September brings with it a nighttime average temperature of 68.7°F (20.4°C) in Royse City.Heat index
September's heat index is estimated at a torrid 95°F (35°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
In September, the average relative humidity in Royse City is 66%.Rainfall
In Royse City, in September, during 15.2 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 146.2 rainfall days, and 32.91" (836mm) of precipitation is accumulated.Snowfall
In Royse City, Texas, snow does not fall in March through October and December.Daylight
In Royse City, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:00 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
How hot does it get in Royse City in September?
What is the average humidity in September in Royse City?
How much does it rain in Royse City in September?
When it does not snow in Royse City?
How many hours of daylight does Royse City have in September?
What time are sunrise and sunset in September in Royse City?
How long on average sun shines in September in Royse City?
How high is the UV index in September in Royse City?
Average temperature in September
Royse City, TX
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in September: 68.7°F
The months with the highest average low temperature are July and August (74.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Royse City, 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
Royse City, TX
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is March (9.6mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in September
Royse City, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Royse City, TX
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in September
Royse City, 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 January (7.8 days).
Average snowfall in September
Royse City, 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, October and December (0").
Average snowfall days in September
Royse City, 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
Royse City, 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 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Royse City, TX
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is September (13.4 days).
Average UV index in September
Royse City, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Royse City, TX
- Average cloud cover in September: 29
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Royse City, 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).
Royse City, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
