September weather forecast
Mount Houmas, LA

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Weather in September

September, the first month of the autumn in Mount Houmas, is still a hot month, with temperature in the range of an average high of 87.4°F (30.8°C) and an average low of 70.5°F (21.4°C).

Temperature

Mount Houmas ushers in September with an average high-temperature of a still tropical 87.4°F (30.8°C), showing a close resemblance to the previous month. Mount Houmas observes an average low-temperature of 70.5°F (21.4°C) during September nights.

Heat index

The heat index value during September is evaluated at a blisteringly hot 104°F (40°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. 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 79%.

Rainfall

In Mount Houmas, during September, the rain falls for 14.9 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, in Mount Houmas, there are 151.5 rainfall days, and 18.62" (473mm) of precipitation is accumulated.

Snowfall

In Mount Houmas, snow does not fall in February through December.

Daylight

In Mount Houmas, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

Sunshine

In Mount Houmas, the average sunshine in September is 9.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during September translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

How hot is it in September?

In September, the average high-temperature and low-temperature are 87.4°F (30.8°C) and 70.5°F (21.4°C) respectively. In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 104°F (40°C).

What is the average humidity in September?

In Mount Houmas, the average relative humidity in September is 79%.

How much does it rain in September?

In Mount Houmas, during September, the rain falls for 14.9 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow?

In Mount Houmas, snow does not fall in February through December.

How many hours of daylight does Mount Houmas have in September?

The average day length in September is 12h and 20min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.9h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mount Houmas, LA

Average temperature in September - Mount Houmas, LA
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (59.2°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 (43.5°F).

Average pressure in September
Mount Houmas, LA

Average pressure in September - Mount Houmas, 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 (29.96"Hg).

Average wind speed in September
Mount Houmas, LA

Average wind speed in September - Mount Houmas, LA
  • Average wind speed in September: 4.9mph

The windiest months (with the highest average wind speed) are February and April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in September
Mount Houmas, LA

Average humidity in September - Mount Houmas, LA
  • Average humidity in September: 79%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Mount Houmas, LA

Average rainfall in September - Mount Houmas, LA
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is July (3.03").
The driest months (with the least rainfall) are March and November (0.98").

Average rainfall days in September
Mount Houmas, LA

Average rainfall days in September - Mount Houmas, LA
  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.9 days).

Average snowfall in September
Mount Houmas, LA

Average snowfall in September - Mount Houmas, 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
Mount Houmas, LA

Average snowfall days in September - Mount Houmas, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 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
Mount Houmas, LA

Average daylight in September / Average sunshine in September - Mount Houmas, 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 6min).

Average sunshine days in September
Mount Houmas, LA

Average sunshine days in September - Mount Houmas, LA
  • Average sunshine days in September: 12.9 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (9.3 days).

Average UV index in September
Mount Houmas, LA

Average UV index in September - Mount Houmas, 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).

Average cloud cover in September
Mount Houmas, LA

Average cloud cover in September - Mount Houmas, LA
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).

Average visibility in September
Mount Houmas, LA

Average visibility in September - Mount Houmas, LA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, June, July, August, October, November and December (6mi).
The months with the lowest visibility are March, April, May and September (5mi).

Mount Houmas, Louisiana, USA

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