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
Cullen in September experiences a gentle temperature dip, with average high-temperatures reducing from a hot 94.5°F (34.7°C) in August to a still tropical 88.2°F (31.2°C). The nighttime temperature in Cullen dips to a refreshing 67.1°F (19.5°C) on average during September.Heat index
September's mean heat index is appraised at a very hot 100.4°F (38°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In September, the average relative humidity is 70%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.97" (50mm) of precipitation.Snowfall
April through December are months without snowfall.Daylight
In September, the average length of the day in Cullen, Louisiana, is 12h and 22min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:59 pm CDT.
Sunshine
In Cullen, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
How hot does it get in Cullen in September?
What is the average humidity in September in Cullen?
What is the driest month in Cullen?
How much does it rain in Cullen in September?
When it does not snow in Cullen?
How many hours of daylight does Cullen have in September?
When are sunrise and sunset in September in Cullen?
How many hours of sunshine does Cullen have in September?
What is the UV index reading in September in Cullen?
Average temperature in September
Cullen, LA
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in September
Cullen, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Cullen, LA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Cullen, LA
- Average humidity in September: 70%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Cullen, LA
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is April (4.65").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Cullen, LA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (14.3 days).
The months with the least rainy days are October and November (10.1 days).
Average snowfall in September
Cullen, LA
- 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, October, November and December (0").
Average snowfall days in September
Cullen, LA
- 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 April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Cullen, LA
- 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: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Cullen, LA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is February (13.5 days).
Average UV index in September
Cullen, LA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Cullen, LA
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Cullen, LA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Cullen, Louisiana, USA
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