September weather forecast
West Monroe, LA

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Weather in September

September introduces a transformative shift in West Monroe's atmospheric configuration as summer starts its retreat and fall commences. There is a noticeable drop in the temperature range, setting the high at 87.8°F (31°C) and the low at 67.8°F (19.9°C). The UV index is reduced to 6, offering locals respite from the harsh summer sun. The month effectively transitions between seasons, with a subtle, slow-changing hue of the foliage. Marking the edge of summer, the last of September’s days are tinged with the first hints of fall and its forthcoming offerings.

Temperature

West Monroe marks the start of September with an average high-temperature of a still hot 87.8°F (31°C), hinting at a slight fluctuation from August's 92.5°F (33.6°C). In West Monroe, September nights witness a steady temperature drop to a refreshing 67.8°F (19.9°C).

Heat index

The heat index in September is estimated at a torrid 100.4°F (38°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The direct sun can potentially cause the heat index to increase 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 encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. 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. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in September is 71%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.6 days and accumulates 1.5" (38mm) of precipitation.

Snowfall

April through November are months without snowfall in West Monroe.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September in West Monroe, Louisiana, sunrise is at 6:43 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:54 pm CDT.

Sunshine

The average sunshine in September is 9.6h.

UV index

In West Monroe, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

Frequently asked questions

Is it hot during September?

In September, in West Monroe, the average high-temperature is 87.8°F (31°C), and the average low-temperature is 67.8°F (19.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is estimated at 100.4°F (38°C).

What is the average humidity in September?

In West Monroe, Louisiana, the average relative humidity in September is 71%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.6 days and typically collects 1.5" (38mm) of precipitation.

How many days does it rain in September?

In West Monroe, in September, it is raining for 11.6 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in West Monroe?

In West Monroe, snow does not fall in April through November.

What is the average length of the day in September?

In September, the average day length in West Monroe, Louisiana, is 12h and 22min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:43 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:54 pm CDT.

How long on average sun shines in September?

In West Monroe, the average sunshine duration in September is 9.6h.

What is the UV index reading in September?

In West Monroe, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe 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
West Monroe, LA

Average temperature in September - West Monroe, LA
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (53.8°F).

  • Average low temperature in September: 67.8°F

The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).

Average pressure in September
West Monroe, LA

Average pressure in September - West Monroe, LA
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
West Monroe, LA

Average wind speed in September - West Monroe, LA
  • Average wind speed in September: 5.3mph

The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

Average humidity in September
West Monroe, LA

Average humidity in September - West Monroe, LA
  • Average humidity in September: 71%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
West Monroe, LA

Average rainfall in September - West Monroe, LA
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is April (4.17").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days in September
West Monroe, LA

Average rainfall days in September - West Monroe, LA
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in September
West Monroe, LA

Average snowfall in September - West Monroe, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
West Monroe, LA

Average snowfall days in September - West Monroe, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
West Monroe, LA

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
West Monroe, LA

Average sunshine days in September - West Monroe, LA
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is February (13.2 days).

Average UV index in September
West Monroe, LA

Average UV index in September - West Monroe, LA
  • Average UV index in September: 6

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

Average cloud cover in September
West Monroe, LA

Average cloud cover in September - West Monroe, LA
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and October (Cloud cover 28).

Average visibility in September
West Monroe, LA

Average visibility in September - West Monroe, 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).

West Monroe, Louisiana, USA

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