September weather forecast
Jackson, MS

September signifies a transition phase in Jackson, Mississippi's climate, bringing the onset of early fall. Temperatures begin to dip towards the end of the month, paving the way for cooler evenings and nights. The weather remains largely dry, with lesser instances of rainfall compared to the previous months. As daylight hours slowly decrease, leaves start turning colors, making the landscapes stunningly beautiful. September is a relatively tranquil time to take in the beautiful surroundings of Jackson, as the weather fluctuates from 67.5°F (19.7°C) to 87.3°F (30.7°C).

Temperature

September's arrival in Jackson brings an average high-temperature of a still tropical 87.3°F (30.7°C), demonstrating subtle variation from the preceding month. An average low-temperature of 67.5°F (19.7°C) is recorded during the nights in September in Jackson.

Heat index

September's average heat index is estimated at a sweltering 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Jackson, the average relative humidity in September is 73%.

Rainfall

In Jackson, in September, during 11.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Jackson, during the entire year, the rain falls for 152.1 days and collects up to 29.72" (755mm) of precipitation.

Snowfall

In Jackson, snow does not fall in March through December.

Daylight

In September, the average length of the day in Jackson is 12h and 21min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:24 pm. On the last day of September, in Jackson, sunrise is at 6:54 am and sunset at 6:46 pm CDT.

Sunshine

In Jackson, the average sunshine in September is 9.7h.

UV index

The average daily maximum UV index in September in Jackson is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.