September weather forecast
Youngsville, LA

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Weather in September

The first month of the autumn, September, is also a hot month in Youngsville, Louisiana, with temperature in the range of an average low of 70.5°F (21.4°C) and an average high of 86.7°F (30.4°C).

Temperature

September's arrival brings an average high-temperature of a still tropical 86.7°F (30.4°C), demonstrating subtle variation from the preceding month. Youngsville experiences an average temperature drop to a pleasant 70.5°F (21.4°C) during September nights.

Heat index

The heat index for September is computed to be a fiery hot 102.2°F (39°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In September, the average relative humidity in Youngsville, Louisiana, is 79%.

Rainfall

In Youngsville, Louisiana, in September, it is raining for 14.9 days, with typically 1.38" (35mm) of accumulated precipitation. In Youngsville, during the entire year, the rain falls for 143.3 days and collects up to 17.91" (455mm) of precipitation.

Snowfall

February through December are months without snowfall in Youngsville.

Daylight

In September, the average length of the day in Youngsville 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, in Youngsville, Louisiana, sunrise is at 7:01 am and sunset at 6:54 pm CDT.

Sunshine

In September, the average sunshine is 9.9h.

UV index

In Youngsville, Louisiana, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In September, the maximum UV index of 6 translates into these guidelines:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

How hot is September in Youngsville?

In Youngsville, in September, the average high-temperature is 86.7°F (30.4°C), and the average low-temperature is 70.5°F (21.4°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is computed to be 102.2°F (39°C).

What is the average humidity in September in Youngsville?

In September, the average relative humidity is 79%.

How much does it rain in Youngsville in September?

In September, in Youngsville, the rain falls for 14.9 days. Throughout September, 1.38" (35mm) of precipitation is accumulated.

When it does not snow in Youngsville?

In Youngsville, snow does not fall in February through December.

What is the average length of the day in September in Youngsville?

In Youngsville, Louisiana, the average day length in September is 12h and 20min.

When are sunrise and sunset in September in Youngsville?

In September, on the first day of the month, sunrise is at 6:45 am and sunset at 7:30 pm. On the last day of the month, in Youngsville, sunrise is at 7:01 am and sunset at 6:54 pm CDT.

How long on average sun shines in September in Youngsville?

The average sunshine duration in September in Youngsville, Louisiana, is 9.9h.

What is the UV index intensity in September in Youngsville?

In Youngsville, Louisiana, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Youngsville, LA

Average temperature in September - Youngsville, LA
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (58.8°F).

  • Average low temperature in September: 70.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in September
Youngsville, LA

Average pressure in September - Youngsville, 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).

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Average wind speed in September
Youngsville, LA

Average wind speed in September - Youngsville, LA
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

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Average humidity in September
Youngsville, LA

Average humidity in September - Youngsville, LA
  • Average humidity in September: 79%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Youngsville, LA

Average rainfall in September - Youngsville, LA
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is March (0.83").

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Average rainfall days in September
Youngsville, LA

Average rainfall days in September - Youngsville, LA
  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is August (20 days).
The months with the least rainy days are January and November (7.8 days).

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Average snowfall days in September
Youngsville, LA

Average snowfall days in September - Youngsville, 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).

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Average daylight in September /
Average sunshine in September
Youngsville, LA

Average daylight in September / Average sunshine in September - Youngsville, 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 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in September
Youngsville, LA

Average sunshine days in September - Youngsville, LA
  • Average sunshine days in September: 12.1 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8 days).

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Average UV index in September
Youngsville, LA

Average UV index in September - Youngsville, LA
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Youngsville, LA

Average cloud cover in September - Youngsville, LA
  • Average cloud cover in September: 29

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 25).

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Average visibility in September
Youngsville, LA

Average visibility in September - Youngsville, 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).

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Youngsville, Louisiana, USA

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