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
Rockdale, Texas, in September undergoes a slight reduction in the average high-temperature, shifting from August's sweltering 96.4°F (35.8°C) to a tropical 88.9°F (31.6°C). An average low-temperature of 70.7°F (21.5°C) is anticipated throughout the nights during September.Heat index
In September, the average heat index is calculated to be a fiery hot 102.2°F (39°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In Rockdale, the average relative humidity in September is 69%.Rainfall
In September, in Rockdale, the rain falls for 14.2 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 128.2 rainfall days, and 18.74" (476mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
In Rockdale, Texas, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:04 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:14 pm CDT.
Sunshine
The average sunshine in September in Rockdale, Texas, is 8.5h.UV index
In September, the average daily maximum UV index in Rockdale is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 6 during September translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. 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
How hot is it in Rockdale in September?
What is the average humidity in September in Rockdale?
How many days does it rain in September in Rockdale?
When it does not snow in Rockdale?
How many hours of daylight does Rockdale have in September?
When are sunrise and sunset in September in Rockdale?
How many hours of sunshine does Rockdale have in September?
What is the UV index intensity in September in Rockdale?
Average temperature in September
Rockdale, TX
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in September: 70.7°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 (42.3°F).
Average pressure in September
Rockdale, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Rockdale, TX
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in September
Rockdale, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Rockdale, TX
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in September
Rockdale, TX
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is September (14.2 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Rockdale, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Rockdale, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (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
Rockdale, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Rockdale, TX
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is September (13.5 days).
Average UV index in September
Rockdale, 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
Rockdale, TX
- Average cloud cover in September: 31
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Rockdale, 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).
Rockdale, Texas, USA
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