September weather forecast
Saint Gabriel, LA

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Weather in September

The first month of the autumn, September, is still a tropical month in Saint Gabriel, Louisiana, with an average temperature fluctuating between 87.8°F (31°C) and 70.3°F (21.3°C).

Temperature

Saint Gabriel starts September with an average high-temperature of a still hot 87.8°F (31°C), hinting at a minimal fluctuation from August. In September, the average low-temperature is an agreeable 70.3°F (21.3°C).

Heat index

For September, the heat index is appraised at a blistering 105.8°F (41°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Saint Gabriel, the average relative humidity in September is 79%.

Rainfall

In Saint Gabriel, during September, the rain falls for 18.6 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 187.5 rainfall days, and 40" (1016mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall.

Daylight

In September, the average length of the day in Saint Gabriel is 12h and 20min.
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.

Sunshine

In Saint Gabriel, the average sunshine in September is 9.7h.

UV index

In Saint Gabriel, 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 exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

How hot is it in September?

In Saint Gabriel, in September, the average high-temperature is 87.8°F (31°C), and the average low-temperature is 70.3°F (21.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in September is appraised at 105.8°F (41°C).

What is the average humidity in September?

In September, the average relative humidity is 79%.

How many days does it rain in September?

In Saint Gabriel, in September, during 18.6 rainfall days, 3.27" (83mm) of precipitation is typically accumulated.

When it does not snow?

February through November are months without snowfall in Saint Gabriel.

What is the average length of the day in September?

In Saint Gabriel, the average day length in September is 12h and 20min.

When is the sunrise / sunset in September?

In September, on the first day of the month, 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 many hours of sunshine does Saint Gabriel have in September?

In Saint Gabriel, the average sunshine duration in September is 9.7h.

What is the UV index reading in September?

In Saint Gabriel, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from 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
Saint Gabriel, LA

Average temperature in September - Saint Gabriel, LA
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in September: 70.3°F

The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).

Average pressure in September
Saint Gabriel, LA

Average pressure in September - Saint Gabriel, 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 and August (29.96"Hg).

Average wind speed in September
Saint Gabriel, LA

Average wind speed in September - Saint Gabriel, LA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Saint Gabriel, LA

Average humidity in September - Saint Gabriel, 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 (73%).

Average rainfall in September
Saint Gabriel, LA

Average rainfall in September - Saint Gabriel, LA
  • Average rainfall in September: 3.27"

The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").

Average rainfall days in September
Saint Gabriel, LA

Average rainfall days in September - Saint Gabriel, LA
  • Average rainfall days in September: 18.6 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).

Average snowfall in September
Saint Gabriel, LA

Average snowfall in September - Saint Gabriel, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.2").
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 Gabriel, LA

Average snowfall days in September - Saint Gabriel, 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 February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Saint Gabriel, LA

Average daylight in September / Average sunshine in September - Saint Gabriel, 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 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Saint Gabriel, LA

Average sunshine days in September - Saint Gabriel, LA
  • Average sunshine days in September: 9.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).

Average UV index in September
Saint Gabriel, LA

Average UV index in September - Saint Gabriel, 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
Saint Gabriel, LA

Average cloud cover in September - Saint Gabriel, LA
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).

Average visibility in September
Saint Gabriel, LA

Average visibility in September - Saint Gabriel, LA
  • Average visibility in September: 5mi

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

Saint Gabriel, Louisiana, USA

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