September weather forecast
Greenwood, LA

September, the first month of the autumn in Greenwood, is also a hot month, with temperature in the range of an average low of 67.8°F (19.9°C) and an average high of 88.9°F (31.6°C).

Temperature

The onset of September entails a subtle temperature shift, as the average high-temperature eases from a very hot 95.2°F (35.1°C) in August to a tropical 88.9°F (31.6°C). During September, Greenwood records a consistent average nighttime temperature of 67.8°F (19.9°C).

Heat index

Throughout September, the heat index is appraised at a torrid 102.2°F (39°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in September is 69%.

Rainfall

In Greenwood, during September, the rain falls for 14.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 161.5 rainfall days, and 39.13" (994mm) of precipitation is accumulated.

Snowfall

January through March, September, November and December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Greenwood, during the entire year, snow falls for 3.4 days and aggregates up to 1.61" (41mm) of snow.

Daylight

In Greenwood, Louisiana, the average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:51 am and sunset at 7:39 pm. On the last day of September, in Greenwood, sunrise is at 7:09 am and sunset at 7:01 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In Greenwood, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.