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
Wallis's shift into September sets the average high-temperature at a still tropical 87.6°F (30.9°C), a figure that deviates only slightly from August's 91.2°F (32.9°C). Throughout the month of September, Wallis witnesses an average low-temperature of 68.2°F (20.1°C).Heat index
For most parts of September, the heat index is appraised at a very hot 102.2°F (39°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The average relative humidity in September is 76%.Rainfall
In Wallis, in September, during 17.1 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Wallis, during the entire year, the rain falls for 172.1 days and collects up to 35.75" (908mm) of precipitation.Snowfall
In Wallis, snow does not fall in April through November.Daylight
In Wallis, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:42 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index in Wallis, Mississippi, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 6 during September translates into the following guidance:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
How hot is September in Wallis?
What is the average humidity in September in Wallis?
How many days does it rain in September in Wallis?
When it does not snow in Wallis?
How many hours of daylight does Wallis have in September?
When is the sunrise / sunset in September in Wallis?
How many hours of sunshine does Wallis have in September?
What is the UV index intensity in September in Wallis?
Average temperature in September
Wallis, MS
- Average high temperature in September: 87.6°F
The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (57.4°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.9°F).
Average pressure in September
Wallis, MS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Wallis, MS
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is July (4.4mph).
Average humidity in September
Wallis, MS
- Average humidity in September: 76%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Wallis, MS
- Average rainfall in September: 2.87"
The wettest months (with the highest rainfall) are July and August (4.37").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in September
Wallis, MS
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Wallis, 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
Wallis, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Wallis, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Wallis, MS
- Average sunshine days in September: 10.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is August (6.8 days).
Average UV index in September
Wallis, 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
Wallis, MS
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Wallis, MS
- Average visibility in September: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Wallis, Mississippi, USA
Weather forecast for your location
2. Allow the app to use your location
