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
In September, the average high-temperature registers at a still tropical 87.8°F (31°C), nearly identical to August's 91.4°F (33°C). During the month of September, the temperature in Stonewall falls to an average of 67.1°F (19.5°C).Heat index
The heat index for September is appraised at a sweltering 102.2°F (39°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. 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 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
The average relative humidity in September is 74%.Rainfall
In Stonewall, in September, it is raining for 14.5 days, with typically 2.76" (70mm) of accumulated precipitation. In Stonewall, during the entire year, the rain falls for 165.6 days and collects up to 36.06" (916mm) of precipitation.Snowfall
In Stonewall, snow does not fall in April through November.Daylight
In September, the average length of the day in Stonewall, Mississippi, is 12h and 21min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:18 pm. On the last day of September, in Stonewall, sunrise is at 6:48 am and sunset at 6:40 pm CDT.
Sunshine
The average sunshine in September in Stonewall is 8.8h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Stonewall in September?
What is the average humidity in September in Stonewall?
How many days does it rain in September in Stonewall?
When it does not snow in Stonewall?
What is the average length of the day in September in Stonewall?
What time are sunrise and sunset in September in Stonewall?
How long on average sun shines in September in Stonewall?
What is the UV index intensity in September in Stonewall?
Average temperature in September
Stonewall, MS
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 67.1°F
The months with the highest average low temperature are July and August (71.8°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).
Average pressure in September
Stonewall, 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
Stonewall, MS
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in September
Stonewall, MS
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Stonewall, MS
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
Stonewall, MS
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Stonewall, MS
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Stonewall, MS
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.8 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
Stonewall, 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: 8h and 5min
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
Stonewall, MS
- Average sunshine days in September: 14.1 days
The months with the most sunshine days are October and November (20.4 days).
The month with the least sunshine days is July (7.5 days).
Average UV index in September
Stonewall, MS
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Stonewall, MS
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in September
Stonewall, MS
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, October and November (6mi).
The months with the lowest visibility are January, May, July, August, September and December (5mi).
Stonewall, Mississippi, USA
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