September weather forecast
Purvis, MS

Appreciated for its characteristic fall weather, September sees a downward shift in temperatures, with an average high of 87.6°F (30.9°C). September's rainfall is noticeably less at 2.87" (73mm) over 17.1 days, providing a much-needed respite from the consistent rainfall of high summer months. The month offers a medley of remaining warm summer days and upcoming cool autumn nights. Decreasing humidity coupled with shorter daylight hours signals the subtle transition of seasons from summer to fall. While constant breezy conditions keep the atmosphere comfortable, the decreased cloud cover allows for clearer skies and beautiful sunsets.

Temperature

Purvis marks the onset of September with an average high-temperature of a still tropical 87.6°F (30.9°C), a subtle shift from August's 91.2°F (32.9°C). Purvis's temperature lowers to a mean of 68.2°F (20.1°C) during the nights in September.

Heat index

In September, the heat index is evaluated at a sweltering 102.2°F (39°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In September, the rain falls for 17.1 days. Throughout September, 2.87" (73mm) of precipitation is accumulated. In Purvis, during the entire year, the rain falls for 172.1 days and collects up to 35.75" (908mm) of precipitation.

Snowfall

In Purvis, snow does not fall in April through November.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 6:34 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:43 pm CDT.

Sunshine

In Purvis, Mississippi, the average sunshine in September is 9.1h.

UV index

In Purvis, 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 ordinary individuals.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.