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
Willowdale, Louisiana, starts September with an average high-temperature of a still hot 86.5°F (30.3°C), a minor shift from August's 88.9°F (31.6°C). Willowdale records an average nighttime low of 75°F (23.9°C) in September.Heat index
For most parts of September, the heat index is appraised at a very hot 98.6°F (37°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
The average relative humidity in September in Willowdale is 75%.Rainfall
In Willowdale, during September, the rain falls for 17 days and regularly aggregates up to 3.82" (97mm) of precipitation. Throughout the year, there are 181.9 rainfall days, and 44.61" (1133mm) of precipitation is accumulated.Snowfall
In Willowdale, snow does not fall in February through December.Daylight
In Willowdale, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:38 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:47 pm CDT.
Sunshine
The average sunshine in September is 10.1h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 7 translates into these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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 Willowdale?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September in Willowdale?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Willowdale, LA
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 75°F
The month with the highest average low temperature is August (78.1°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in September
Willowdale, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in September
Willowdale, LA
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are February and April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Willowdale, LA
- Average humidity in September: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Willowdale, LA
- Average rainfall in September: 3.82"
The wettest month (with the highest rainfall) is July (6.5").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in September
Willowdale, LA
- Average rainfall days in September: 17 days
The months with the highest number of rainy days are July and August (22.8 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in September
Willowdale, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
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
Willowdale, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 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
Willowdale, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Willowdale, LA
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in September
Willowdale, LA
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, November and December (UV index 4).
Average cloud cover in September
Willowdale, LA
- Average cloud cover in September: 26
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Willowdale, LA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Willowdale, Louisiana, USA
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