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
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a very hot 95.4°F (35.2°C) to a tropical 87.4°F (30.8°C). Throughout September, an average low-temperature of 69.4°F (20.8°C) is expected.Heat index
September's heat index is calculated to be a fiery hot 96.8°F (36°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.Observations indicate that the heat index values are for shady locations with light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In Rowlett, the average relative humidity in September is 65%.Rainfall
In Rowlett, during September, the rain falls for 12.5 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 120.2 rainfall days, and 17.87" (454mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
In Rowlett, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm CDT.
Sunshine
In September, the average sunshine in Rowlett is 8.5h.UV index
The average daily maximum UV index in September in Rowlett, Texas, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 6 suggests this advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
Is it hot in Rowlett during September?
What is the average humidity in September in Rowlett?
How much does it rain in Rowlett in September?
When it does not snow in Rowlett?
What is the average length of the day in September in Rowlett?
What time are sunrise and sunset in September in Rowlett?
How long on average sun shines in September in Rowlett?
What is the UV index intensity in September in Rowlett?
Average temperature in September
Rowlett, TX
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (95.4°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Rowlett, 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
Rowlett, TX
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are March and April (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in September
Rowlett, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Rowlett, TX
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in September
Rowlett, TX
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is September (12.5 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Rowlett, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Rowlett, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 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
Rowlett, 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 30min).
Average sunshine days in September
Rowlett, TX
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is June (16.2 days).
Average UV index in September
Rowlett, TX
- Average UV index in September: 6
The months with the highest UV index are May, 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
Rowlett, TX
- Average cloud cover in September: 29
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 21).
Average visibility in September
Rowlett, 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).
Rowlett, Texas, USA
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