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 Celina's weather is observed as August turns into September, with the average high temperature reducing from a very hot 95°F (35°C) to a tropical 86.9°F (30.5°C). In September, the average low-temperature records at a pleasant 69.3°F (20.7°C) during the nights.Heat index
The heat index value during September is calculated to be a sweltering 95°F (35°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. 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 is 64%.Rainfall
In September, the rain falls for 14.7 days. Throughout September, 2.99" (76mm) of precipitation is accumulated. In Celina, during the entire year, the rain falls for 139.7 days and collects up to 31.73" (806mm) of precipitation.Snowfall
In Celina, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 7:01 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 suggests this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Celina have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Celina have in September?
What is the UV index reading in September?
Average temperature in September
Celina, TX
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 69.3°F
The month with the highest average low temperature is July (75.6°F).
The coldest month (with the lowest average low temperature) is January (37.8°F).
Average pressure in September
Celina, 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 (29.9"Hg).
Average wind speed in September
Celina, TX
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Celina, TX
- Average humidity in September: 64%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Celina, TX
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is October (3.94").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
Celina, TX
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Celina, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Celina, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Celina, 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 4min
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 42min).
Average sunshine days in September
Celina, TX
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Celina, 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 November and December (UV index 3).
Average cloud cover in September
Celina, TX
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Celina, 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).
Celina, Texas, USA
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