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
The commencement of September brings an average high-temperature of a still tropical 87.3°F (30.7°C), marking an inconsequential divergence from August. In September, Jack reports a consistent average low-temperature of 67.6°F (19.8°C) during the nights.Heat index
In September, the heat index is estimated at a very hot 100.4°F (38°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Note that heat index values are valued for light wind and location in the shade. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation 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 in Jack is 74%.Rainfall
In Jack, in September, it is raining for 14.2 days, with typically 2.76" (70mm) of accumulated precipitation. In Jack, during the entire year, the rain falls for 163.6 days and collects up to 37.95" (964mm) of precipitation.Snowfall
In Jack, snow does not fall in March through November.Daylight
In Jack, Mississippi, the average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:26 pm. On the last day of September, in Jack, sunrise is at 6:56 am and sunset at 6:48 pm CDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot does it get in Jack in September?
What is the average humidity in September in Jack?
How many days does it rain in September in Jack?
When it does not snow in Jack?
What is the average length of the day in September in Jack?
When is the sunrise / sunset in September in Jack?
How many hours of sunshine does Jack have in September?
What is the UV index reading in September in Jack?
Average temperature in September
Jack, MS
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 67.6°F
The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Jack, 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
Jack, MS
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are February and April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Jack, 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 (70%).
Average rainfall in September
Jack, MS
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is August (4.21").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in September
Jack, MS
- Average rainfall days in September: 14.2 days
The months with the highest number of rainy days are July and August (19.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Jack, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Jack, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.9 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
Jack, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Jack, MS
- Average sunshine days in September: 14 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Jack, MS
- Average UV index in September: 6
The months with the highest UV index are 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
Jack, MS
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Jack, MS
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Jack, Mississippi, USA
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