September weather forecast
Opelousas, LA

September signals the onset of autumn in Opelousas, Louisiana, bringing with it a welcome relief from the intense heat of the past summer months. With the high temperature dialing down to a comfortable 86.9°F (30.5°C), locals find it pleasant enough for a range of outdoor activities. A significant drop in rain compared to July and August at 0.75" (19mm) brings drier days, and the air starts to feel crisp as the month progresses. The anticipation of October's even cooler temperatures and delightful autumn foliage makes September a month of seasonal transition and budding excitement in Opelousas.

Temperature

The transition into September in Opelousas, Louisiana, is marked with an average high-temperature of a still tropical 86.9°F (30.5°C), showing an insignificant shift from August's 90.1°F (32.3°C). In September, the average low-temperature is a pleasant 69.6°F (20.9°C).

Heat index

For most parts of September, the heat index is computed to be a fiery hot 102.2°F (39°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

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

Rainfall

In Opelousas, Louisiana, in September, during 13.1 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Opelousas, during the entire year, the rain falls for 127.3 days and collects up to 11.65" (296mm) of precipitation.

Snowfall

February through November are months without snowfall in Opelousas.

Daylight

In Opelousas, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:30 pm. On the last day of September, in Opelousas, sunrise is at 7:01 am and sunset at 6:54 pm CDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

In September, the average daily maximum UV index in Opelousas is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.