September weather forecast
Catherine, LA

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Weather in September

September, the first month of the autumn in Catherine, is still a tropical month, with an average temperature ranging between max 87.3°F (30.7°C) and min 70.5°F (21.4°C).

Temperature

As Catherine, Louisiana, welcomes September, the average high-temperature stabilizes at a still tropical 87.3°F (30.7°C), showing little deviation from August's 90.9°F (32.7°C). During September nights, Catherine records an average temperature of 70.5°F (21.4°C).

Heat index

The heat index value during September is evaluated at an extremely hot 104°F (40°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Catherine, the average relative humidity in September is 80%.

Rainfall

In Catherine, in September, during 17 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 154.1 rainfall days, and 17.91" (455mm) of precipitation is accumulated.

Snowfall

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

Daylight

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 September, the average sunshine is 9.8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. 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. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

Is it hot during September?

Catherine in September has an average high-temperature of 87.3°F (30.7°C) and an average low-temperature of 70.5°F (21.4°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is evaluated at 104°F (40°C).

What is the average humidity in September?

In Catherine, the average relative humidity in September is 80%.

How much does it rain in September?

In September, in Catherine, the rain falls for 17 days. Throughout September, 1.26" (32mm) of precipitation is accumulated.

When it does not snow?

February through December are months without snowfall.

What is the average length of the day in September?

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

When are sunrise and 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 Catherine have in September?

In September, the average sunshine duration in Catherine is 9.8h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average max. wind speed
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
Catherine, LA

Average temperature in September - Catherine, LA
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (59.4°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 (44.1°F).

Average pressure in September
Catherine, LA

Average pressure in September - Catherine, 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
Catherine, LA

Average wind speed in September - Catherine, LA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

Average humidity in September
Catherine, LA

Average humidity in September - Catherine, LA
  • Average humidity in September: 80%

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

Average rainfall in September
Catherine, LA

Average rainfall in September - Catherine, LA
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is November (0.79").

Average rainfall days in September
Catherine, LA

Average rainfall days in September - Catherine, LA
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is August (20.8 days).
The month with the least rainy days is November (7.2 days).

Average snowfall in September
Catherine, LA

Average snowfall in September - Catherine, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.12").
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
Catherine, LA

Average snowfall days in September - Catherine, 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, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Catherine, 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
Catherine, LA

Average sunshine days in September - Catherine, LA
  • Average sunshine days in September: 10.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (7.5 days).

Average UV index in September
Catherine, LA

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

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

Average cloud cover in September
Catherine, LA

Average cloud cover in September - Catherine, 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
Catherine, LA

Average visibility in September - Catherine, 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).

Catherine, Louisiana, USA

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