September weather forecastSaint Francisville, LA
September
Weather in September
The first month of the autumn, September, is still a tropical month in Saint Francisville, Louisiana, with an average temperature ranging between max 87.8°F (31°C) and min 68.9°F (20.5°C).Temperature
Saint Francisville marks the arrival of September with an average high-temperature of a still tropical 87.8°F (31°C), hardly different from August's 91.6°F (33.1°C). During September, an average low-temperature of 68.9°F (20.5°C) is observed.Heat index
The heat index value during September is estimated at a scorching 105.8°F (41°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
In September, the average relative humidity is 79%.Rainfall
In Saint Francisville, in September, during 14.7 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 173 rainfall days, and 35.79" (909mm) of precipitation is accumulated.Snowfall
In Saint Francisville, snow does not fall in February through November.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:51 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saint Francisville, LA
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (91.6°F).
The month with the lowest average high temperature is January (57.4°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (41.7°F).
Average pressure in September
Saint Francisville, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).
Average wind speed in September
Saint Francisville, LA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.2mph).
Average humidity in September
Saint Francisville, LA
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Saint Francisville, LA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in September
Saint Francisville, LA
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is August (19.4 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in September
Saint Francisville, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Saint Francisville, 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 April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Saint Francisville, LA
- Average daylight in September: 12h and 18min
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 24min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Saint Francisville, LA
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is August (9.9 days).
Average UV index in September
Saint Francisville, LA
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Saint Francisville, LA
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Saint Francisville, LA
- Average visibility in September: 5mi
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
