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
In Lisbon, entering September brings a subtle temperature decrement, reducing from August's 93.7°F (34.3°C) to a still hot 88°F (31.1°C). Nighttime temperatures in Lisbon hover around an average low of 66.9°F (19.4°C) in September.Heat index
The heat index value for September is appraised at a torrid 100.4°F (38°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
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 individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
In September, the average relative humidity is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 2.2" (56mm) of precipitation.Snowfall
April through November are months without snowfall in Lisbon.Daylight
The average length of the day in September is 12h and 22min.On the first day of September in Lisbon, sunrise is at 6:46 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.
Sunshine
In Lisbon, the average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September in Lisbon is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
Is it hot in Lisbon during September?
What is the average humidity in September in Lisbon?
What is the driest month in Lisbon?
How many days does it rain in September in Lisbon?
When it does not snow in Lisbon?
What is the average length of the day in September in Lisbon?
When is the sunrise / sunset in September in Lisbon?
How many hours of sunshine does Lisbon have in September?
How high is the UV index in September in Lisbon?
Average temperature in September
Lisbon, LA
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is January (53.4°F).
- Average low temperature in September: 66.9°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Lisbon, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Lisbon, LA
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Lisbon, LA
- Average humidity in September: 71%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Lisbon, LA
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Lisbon, LA
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is October (10.1 days).
Average snowfall in September
Lisbon, LA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Lisbon, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Lisbon, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Lisbon, LA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is March (13.3 days).
Average UV index in September
Lisbon, LA
- 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
Lisbon, LA
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in September
Lisbon, LA
- Average visibility in September: 6mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Lisbon, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
