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 initiation of September sees an average high-temperature of a still tropical 86.5°F (30.3°C), showing minor variations from the previous month. An average temperature of 69.8°F (21°C) marks the nights in September.Heat index
During September, the heat index is calculated to be a torrid 102.2°F (39°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.For clarity, heat index numbers account for light winds and areas under shade. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
In Vatican, the average relative humidity in September is 80%.Rainfall
In Vatican, in September, during 15.4 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, there are 170.6 rainfall days, and 35.79" (909mm) of precipitation is accumulated.Snowfall
February through November are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:30 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:54 pm CDT.
Sunshine
The average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, a regular UV index of 6 translates into these guidelines:
Fend off overexposure. Sun protection is vital. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Vatican?
How many hours of daylight does Vatican have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Vatican have in September?
How high is the UV index in September?
Average temperature in September
Vatican, LA
- Average high temperature in September: 86.5°F
The warmest months (with the highest average high temperature) are July and August (90°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in September
Vatican, 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 (29.95"Hg).
Average wind speed in September
Vatican, LA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and September (5.2mph).
Average humidity in September
Vatican, LA
- Average humidity in September: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Vatican, LA
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in September
Vatican, LA
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Vatican, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Vatican, 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 March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Vatican, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Vatican, LA
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in September
Vatican, 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
Vatican, LA
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility in September
Vatican, 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).
Vatican, Louisiana, USA
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