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
September signals a slight drop in average high-temperature, sliding from August's sweltering 95°F (35°C) to a hot 88.9°F (31.6°C). September nights in Frierson are marked by an average temperature drop to a comfortable 67.6°F (19.8°C).Heat index
The heat index for September is evaluated at an extremely hot 104°F (40°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Heat index evaluations are typically in the context of light winds and shaded environments. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
In September, the average relative humidity is 71%.Rainfall
In Frierson, during September, the rain falls for 13.9 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Frierson, during the entire year, the rain falls for 154.3 days and collects up to 37.09" (942mm) of precipitation.Snowfall
January through March, September and December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 2.2 snowfall days, and 0.63" (16mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 21min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:08 am and sunset at 7:00 pm CDT.
Sunshine
In Frierson, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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 Frierson?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Frierson, LA
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 67.6°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure in September
Frierson, LA
- Average pressure in September: 29.97"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
Frierson, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest months (with the lowest average wind speed) are July, August and September (5mph).
Average humidity in September
Frierson, LA
- Average humidity in September: 71%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Frierson, LA
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is July (2.2").
Average rainfall days in September
Frierson, LA
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is March (15 days).
The month with the least rainy days is October (9.4 days).
Average snowfall in September
Frierson, LA
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (0.31").
The months with the least snowfall are April, May, June, July, August, October and November (0").
Average snowfall days in September
Frierson, LA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Frierson, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Frierson, LA
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in September
Frierson, 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
Frierson, LA
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Frierson, LA
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
Frierson, Louisiana, USA
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