September weather forecast
New Sarpy, LA

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Weather in September

The first month of the autumn, September, is still a hot month in New Sarpy, Louisiana, with temperature in the range of an average low of 74.1°F (23.4°C) and an average high of 86.5°F (30.3°C).

Temperature

The arrival of September coincides with an average high-temperature of a still hot 86.5°F (30.3°C), indicating a minimal shift from August's 89.1°F (31.7°C). Throughout September, the temperature falls to an average low of 74.1°F (23.4°C).

Heat index

In September, the average heat index is appraised at a sweltering 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In New Sarpy, the average relative humidity in September is 76%.

Rainfall

In New Sarpy, during September, the rain falls for 19.9 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in New Sarpy, there are 180.8 rainfall days, and 33.39" (848mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall in New Sarpy.

Daylight

In New Sarpy, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of September, in New Sarpy, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

Sunshine

In New Sarpy, Louisiana, the average sunshine in September is 10.2h.

UV index

In New Sarpy, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The average high-temperature, in September, in New Sarpy, is 86.5°F (30.3°C), while the average low-temperature is 74.1°F (23.4°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 98.6°F (37°C).

What is the average humidity in September?

In New Sarpy, the average relative humidity in September is 76%.

How much does it rain in September?

In New Sarpy, in September, during 19.9 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When it does not snow?

February through November are months without snowfall.

What is the average length of the day in September?

In September, the average day length in New Sarpy, Louisiana, is 12h and 20min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

How many hours of sunshine does New Sarpy have in September?

In September, the average sunshine duration is 10.2h.

What is the UV index reading in September in New Sarpy?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
New Sarpy, LA

Average temperature in September - New Sarpy, LA
  • Average high temperature in September: 86.5°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in September: 74.1°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).

Average pressure in September
New Sarpy, LA

Average pressure in September - New Sarpy, 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, August and September (29.97"Hg).

Average wind speed in September
New Sarpy, LA

Average wind speed in September - New Sarpy, LA
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in September
New Sarpy, LA

Average humidity in September - New Sarpy, LA
  • Average humidity in September: 76%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
New Sarpy, LA

Average rainfall in September - New Sarpy, LA
  • Average rainfall in September: 2.83"

The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is November (1.5").

Average rainfall days in September
New Sarpy, LA

Average rainfall days in September - New Sarpy, LA
  • Average rainfall days in September: 19.9 days

The month with the highest number of rainy days is August (23.7 days).
The month with the least rainy days is November (8.4 days).

Average snowfall days in September
New Sarpy, LA

Average snowfall days in September - New Sarpy, 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 and November (0 days).

Average daylight in September /
Average sunshine in September
New Sarpy, LA

Average daylight in September / Average sunshine in September - New Sarpy, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
New Sarpy, LA

Average sunshine days in September - New Sarpy, LA
  • Average sunshine days in September: 7.9 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is August (4.8 days).

Average UV index in September
New Sarpy, LA

Average UV index in September - New Sarpy, 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
New Sarpy, LA

Average cloud cover in September - New Sarpy, LA
  • Average cloud cover in September: 25

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).

Average visibility in September
New Sarpy, LA

Average visibility in September - New Sarpy, LA
  • Average visibility in September: 6mi

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

New Sarpy, Louisiana, USA

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