September weather forecast
Myrtle Grove Plantation, LA

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Weather in September

September, the first month of the autumn in Myrtle Grove Plantation, is still a hot month, with an average temperature ranging between min 70.3°F (21.3°C) and max 87.3°F (30.7°C).

Temperature

Myrtle Grove Plantation sees the arrival of September with an average high-temperature of a still tropical 87.3°F (30.7°C), indicating a subtle variation from August. Throughout September, the average low-temperature dips to a pleasant 70.3°F (21.3°C).

Heat index

In September, the average heat index is evaluated at a scorching 104°F (40°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Myrtle Grove Plantation, in September, during 16 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, in Myrtle Grove Plantation, there are 148.6 rainfall days, and 15.51" (394mm) of precipitation is accumulated.

Snowfall

In Myrtle Grove Plantation, snow does not fall in February through December.

Daylight

The average length of the day in September in Myrtle Grove Plantation is 12h and 20min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:51 pm CDT.

Sunshine

In September, the average sunshine is 9.7h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during September translates into these guidelines:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

An average high-temperature, in September, in Myrtle Grove Plantation, is 87.3°F (30.7°C) and the average low-temperature is 70.3°F (21.3°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 104°F (40°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 Myrtle Grove Plantation, in September, during 16 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow in Myrtle Grove Plantation?

In Myrtle Grove Plantation, snow does not fall in February through December.

How many hours of daylight does Myrtle Grove Plantation have in September?

In September, the average day length in Myrtle Grove Plantation is 12h and 20min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:51 pm CDT.

How many hours of sunshine does Myrtle Grove Plantation have in September?

In Myrtle Grove Plantation, the average sunshine duration in September is 9.7h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
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
Myrtle Grove Plantation, LA

Average temperature in September - Myrtle Grove Plantation, LA
  • Average high temperature in September: 87.3°F

The warmest months (with the highest average high temperature) are July and August (91.2°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 (74.5°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

Average pressure in September
Myrtle Grove Plantation, LA

Average pressure in September - Myrtle Grove Plantation, 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
Myrtle Grove Plantation, LA

Average wind speed in September - Myrtle Grove Plantation, LA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Myrtle Grove Plantation, LA

Average humidity in September - Myrtle Grove Plantation, 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
Myrtle Grove Plantation, LA

Average rainfall in September - Myrtle Grove Plantation, LA
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is March (0.67").

Average rainfall days in September
Myrtle Grove Plantation, LA

Average rainfall days in September - Myrtle Grove Plantation, LA
  • Average rainfall days in September: 16 days

The month with the highest number of rainy days is August (20.9 days).
The month with the least rainy days is November (7.1 days).

Average snowfall in September
Myrtle Grove Plantation, LA

Average snowfall in September - Myrtle Grove Plantation, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.08").
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
Myrtle Grove Plantation, LA

Average snowfall days in September - Myrtle Grove Plantation, 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
Myrtle Grove Plantation, LA

Average daylight in September / Average sunshine in September - Myrtle Grove Plantation, 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 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
Myrtle Grove Plantation, LA

Average sunshine days in September - Myrtle Grove Plantation, LA
  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is November (21.4 days).
The months with the least sunshine days are July and August (7.3 days).

Average UV index in September
Myrtle Grove Plantation, LA

Average UV index in September - Myrtle Grove Plantation, 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
Myrtle Grove Plantation, LA

Average cloud cover in September - Myrtle Grove Plantation, LA
  • Average cloud cover in September: 31

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 27).

Average visibility in September
Myrtle Grove Plantation, LA

Average visibility in September - Myrtle Grove Plantation, LA
  • Average visibility in September: 5mi

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

Myrtle Grove Plantation, Louisiana, USA

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