September weather forecast
Natchez, MS

September in Natchez, Mississippi, signals a slow yet steady move towards milder conditions. The fall in temperatures is visible with the highest temperature registering at a slighter cooler 87.3°F (30.7°C). The relief extends to precipitation levels, showing a significant dip to 2.72" (69mm). With the oppressive heat tapering off, residents look forward to welcoming the fall season. The slight chill in the air punctuates the warm afternoons making September an excellent month for outdoor activities.

Temperature

Natchez's weather in September, with an average high-temperature of a still hot 87.3°F (30.7°C), subtly shifts from August's 91°F (32.8°C). Natchez's nights in September experience an average temperature drop to a pleasant 68.2°F (20.1°C).

Heat index

In September, the average heat index is evaluated at a very hot 102.2°F (39°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

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

Rainfall

In September, the rain falls for 14.8 days. Throughout September, 2.72" (69mm) of precipitation is accumulated. Throughout the year, there are 168.8 rainfall days, and 37.52" (953mm) of precipitation is accumulated.

Snowfall

In Natchez, Mississippi, snow does not fall in April through November.

Daylight

In Natchez, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:28 pm. On the last day of September, in Natchez, sunrise is at 6:59 am and sunset at 6:51 pm CDT.

Sunshine

In Natchez, the average sunshine in September is 9.5h.

UV index

In Natchez, Mississippi, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.