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
With the transition into September, China notes an average high-temperature of a still hot 86.7°F (30.4°C), closely resembling August. China, during September nights, observes an average temperature of 69.6°F (20.9°C).Heat index
September's heat index is estimated at a sweltering 102.2°F (39°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In September, the average relative humidity is 79%.Rainfall
In China, in September, it is raining for 13.8 days, with typically 1.54" (39mm) of accumulated precipitation. In China, during the entire year, the rain falls for 153 days and collects up to 23.98" (609mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In China, Louisiana, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:33 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:56 pm CDT.
Sunshine
In China, Louisiana, the average sunshine in September is 9.5h.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 the ordinary person.Note: The maximum UV index of 6 during September translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September in China?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
China, LA
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (73.9°F).
The coldest month (with the lowest average low temperature) is January (42.6°F).
Average pressure in September
China, LA
- 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 (29.94"Hg).
Average wind speed in September
China, LA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
China, LA
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
China, LA
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is August (3.5").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in September
China, LA
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
China, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
China, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
China, LA
- 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: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
China, LA
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (9.2 days).
Average UV index in September
China, LA
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
China, LA
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
China, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
China, Louisiana, USA
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