September weather forecast
Gonzales, LA

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Weather in September

September marks the beginning of autumn in Gonzales, Louisiana. Gradual decrease in temperature notes the transition to this new season, with the average maximum falling to 87.4°F (30.8°C). The month offers plentiful sunshine hours, complemented by moderately high rainfall. Although the shift in season is subtle, the changing winds carry whispers of the cooler months ahead. Sepember is often looked upon as a breath of fresh relief after the scorching summer.

Temperature

With the transition into September, Gonzales notes an average high-temperature of a still hot 87.4°F (30.8°C), closely resembling August. During the month of September, an average temperature of 70.5°F (21.4°C) is noted during the nights.

Heat index

The heat index in 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 determinations are made taking into account the shade and light air movements. 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', is a single figure representing how weather conditions feel when combining temperature and humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

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

Rainfall

In Gonzales, Louisiana, in September, it is raining for 14.9 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, in Gonzales, there are 151.5 rainfall days, and 18.62" (473mm) of precipitation is accumulated.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of September in Gonzales, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

Sunshine

In Gonzales, the average sunshine in September is 9.9h.

UV index

The average daily maximum UV index in September in Gonzales, Louisiana, is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

How hot is it in Gonzales in September?

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

What is the average humidity in September in Gonzales?

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

How many days does it rain in September in Gonzales?

In Gonzales, Louisiana, in September, it is raining for 14.9 days, with typically 1.18" (30mm) of accumulated precipitation.

When it does not snow in Gonzales?

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

How many hours of daylight does Gonzales have in September?

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

When are sunrise and sunset in September in Gonzales?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of the month, in Gonzales, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

How long on average sun shines in September in Gonzales?

In September, the average sunshine duration is 9.9h.

How high is the UV index in September in Gonzales?

In September, the average daily maximum UV index in Gonzales is 6. A UV Index value of 6 to 7 symbolizes 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
Gonzales, LA

Average temperature in September - Gonzales, 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).

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Average pressure in September
Gonzales, LA

Average pressure in September - Gonzales, 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).

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Average wind speed in September
Gonzales, LA

Average wind speed in September - Gonzales, 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).

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Average humidity in September
Gonzales, LA

Average humidity in September - Gonzales, 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%).

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Average rainfall in September
Gonzales, LA

Average rainfall in September - Gonzales, 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").

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Average rainfall days in September
Gonzales, LA

Average rainfall days in September - Gonzales, 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).

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Average snowfall in September
Gonzales, LA

Average snowfall in September - Gonzales, 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").

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Average snowfall days in September
Gonzales, LA

Average snowfall days in September - Gonzales, 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).

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

Average daylight in September / Average sunshine in September - Gonzales, 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).

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Average sunshine days in September
Gonzales, LA

Average sunshine days in September - Gonzales, 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).

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Average UV index in September
Gonzales, LA

Average UV index in September - Gonzales, 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
Gonzales, LA

Average cloud cover in September - Gonzales, 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).

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Average visibility in September
Gonzales, LA

Average visibility in September - Gonzales, 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).

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Gonzales, Louisiana, USA

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