Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Port Gibson's average high-temperature in September sits at a still tropical 88.2°F (31.2°C), showing little difference from the previous month. During the month of September, Port Gibson experiences a steady low-temperature average of 67.6°F (19.8°C).Heat index
September's mean heat index is calculated to be a fiery hot 102.2°F (39°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for 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.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
The average relative humidity in September in Port Gibson is 74%.Rainfall
In September, in Port Gibson, Mississippi, the rain falls for 13.4 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. Throughout the year, there are 141.8 rainfall days, and 23.39" (594mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September in Port Gibson is 12h and 21min.On the first day of September, sunrise is at 6:39 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:49 pm CDT.
Sunshine
In September, the average sunshine in Port Gibson is 9.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 6 in September translates into these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
How hot is September in Port Gibson?
What is the average humidity in September in Port Gibson?
How many days does it rain in September in Port Gibson?
When it does not snow in Port Gibson?
What is the average length of the day in September in Port Gibson?
When are sunrise and sunset in September in Port Gibson?
How long on average sun shines in September in Port Gibson?
What is the UV index reading in September in Port Gibson?
Average temperature in September
Port Gibson, MS
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
Port Gibson, MS
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Port Gibson, MS
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in September
Port Gibson, MS
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Port Gibson, MS
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Port Gibson, MS
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is August (17.4 days).
The month with the least rainy days is October (6.9 days).
Average snowfall in September
Port Gibson, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Port Gibson, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Port Gibson, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Port Gibson, MS
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is August (11 days).
Average UV index in September
Port Gibson, MS
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Port Gibson, MS
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Port Gibson, MS
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Port Gibson, Mississippi, USA
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